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Driving on highways can quickly turn into an unpleasant experience when the car begins to shake without warning. What are the hidden causes behind vehicle vibration at high speeds, and how can you eliminate them?

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Car spare parts fall into three main types: genuine parts (dealer parts) that carry the carmaker's brand or are made by its supplier to the same specification, aftermarket parts made by other companies with varying quality, and used parts from salvage yards (tashleeh) removed from other cars, while counterfeit parts that imitate the look and brand of genuine parts should be avoided completely. The practical rule: choose genuine or trusted high-quality aftermarket parts for safety items such as brakes, steering, suspension, airbags and tyres, accept good aftermarket parts for consumables like filters, wipers and bulbs, and always confirm the part number, keep the invoice and have the part fitted at a qualified workshop.
Parts may look alike, but they differ in their maker, specification and source; the table below summarises the types found in shops and workshops:
| Type | What it means | What sets it apart | What to watch for |
| Genuine (dealer) | A part carrying the carmaker's brand, sold through the dealer or its distributors | Matches factory specifications and has a clear source | Usually costs more and may need to be ordered |
| Original supplier (OES) | A part made by the supplier that supplies the carmaker, sold in its own box and brand | May match the genuine part's specifications | Do not assume a match; ask and compare the part number |
| Aftermarket | A part made by other companies to fit several models | More choice and often lower cost | Quality varies widely by manufacturer |
| Used (salvage) | A part removed from another car, possibly genuine originally | A solution for rare or discontinued parts | Unknown age and history, and it may carry no warranty |
| Counterfeit | A part that imitates the look, box and brand of the genuine part | No real advantage; the tempting price is the bait | A safety risk and commercial fraud |
The Technical Regulation for Auto Spare Parts issued by the Saudi Standards, Metrology and Quality Organization defines original parts as parts designed and manufactured to the vehicle manufacturer's specifications, made either by the vehicle manufacturer itself or by a manufacturer working to the same specification and quality control system, while commercial parts are replacement parts made to international standards, country-of-origin standards or the parts manufacturer's own standards, so that they meet the vehicle manufacturer's performance requirements.
Because market terms are not standardised, and some sellers use the word genuine or the abbreviation OEM for parts that do not come from the dealer, ask clearly: who made the part? What is its number? What warranty does it carry?
Some parts are what stops the car, steers it or protects you in a crash, and they can fail suddenly. For these parts, do not make price the first criterion; choose genuine or an aftermarket part from a known manufacturer that meets the carmaker's specifications:
The same applies to parts whose failure can cause major damage to the engine or gearbox, such as the timing belt, where fitted, and the water pump.
An aftermarket part is not necessarily poor, as quality varies from one manufacturer to another, and it is often a reasonable choice for consumables that are replaced periodically and are easy to check, such as:
In every case, insist on three things: a known manufacturer with clear data on the box, a part number that matches yours or is an approved replacement for it, and a seller who gives you an invoice. Because these parts follow fixed intervals, tie their purchase to your periodic car maintenance schedule instead of waiting until they fail.
Salvage parts may be genuine originally, but they carry the age and usage of the car they came from, so they suit some cases and not others:
Before buying, inspect the part yourself: signs of impact, welding or rust, signs of flooding or fire, or cracks in rubber and plastic, and match its number with your part's number.
A counterfeit copies the look, box and brand of the genuine part but not its specification, and may seem convincing at first glance. Warning signs include:
The same regulation requires each package to show the manufacturer's name or trademark, the country of origin, and the part's designation or number as classified in the manufacturer's catalogue; missing data is a warning sign in itself.
The part number is the most precise way to make sure a part fits your car, because parts for the same model can differ by model year, trim and engine type.
Proper paperwork and correct fitting matter as much as the part itself:
The difference between genuine, aftermarket and used parts lies in the specification, the source and the paperwork, not the name: choose the best for safety parts, use good aftermarket parts for consumables, treat salvage parts with caution, and avoid counterfeits completely. To plan your car's maintenance, read how to choose the right maintenance to cut car costs and faults.

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If you are asking when to replace car tyres, the short answer is: replace a tyre when the surface of the tread reaches the level of the raised wear indicators inside the grooves, when a bulge, a deep cut or clear cracks appear in its sidewall, or when the rubber has aged to the point at which the tyre or car manufacturer recommends replacement, even if the tread looks good. In this guide we explain how to check your tyres, what the wear pattern reveals, and how to choose the right replacement.
Replacement is not tied to a single distance for every car, but to the tyre's condition and its maker's recommendations. The main signs are:
Inside the grooves are small raised bars called wear indicators, whose location is marked by the letters TWI or a small triangle on the tyre's shoulder, and when the tread surface is level with them, the tyre has reached the end of its usable life. To check:
Do not wait until they are exactly level if you travel often or drive in the rain, as water clearance and grip weaken gradually as the tread gets shallower.
The sidewall flexes with every turn of the wheel and carries the car's weight, so any damage to it is more dangerous than tread wear:
The wear pattern reveals the cause of the problem, and if you do not fix it, new tyres will wear the same way:
| Wear pattern | Likely cause | What to do |
| Both edges more than the centre | Pressure lower than recommended | Set the pressure according to the driver's door sticker and check it regularly |
| Centre more than the edges | Pressure higher than recommended | Set the recommended pressure, not the maximum pressure printed on the tyre |
| One inner or outer edge | Wheel alignment or suspension fault | Check the alignment and suspension parts |
| Diagonal, feather-like wear | Incorrect toe between the two wheels | Have the alignment set at an equipped workshop |
| Repeated patches or scallops | Unbalanced wheels or worn shock absorbers | Balance the wheels and check the shock absorbers |
| A single flat spot | Hard braking with a locked wheel, or standing a long time without moving | Have a specialist assess the tyre |
If you see wear on both edges, start by reviewing the causes, signs and solutions for low tyre pressure, and if the wear is on one edge or comes with the car pulling to one side, read about the difference between wheel balancing and alignment.
Rubber ages over time even if the car is used little, and you will find how to tell a tyre's age from the DOT code in our article on how to read tyre size and manufacture date. There is no single lifespan for all tyres, so refer to the tyre and car makers' recommendations. In the Kingdom's climate, some factors speed up deterioration:
Ideally all four tyres match, but replacing them all together is not always necessary:
The spare forgotten in the boot ages just like the other tyres, even if it is never used:
Choose what your car was designed for, not just what the shop has in stock, and check the following:
The Saudi Standards, Metrology and Quality Organization offers the Energy Efficiency Label for Tires service, and explains that the label serves as a guide for consumers before purchasing the product to increase their awareness of its energy efficiency before buying it.
The organization lists tyres among the products subject to the efficiency label regulations, and the aims of these labels include reducing energy consumption for the consumer, enabling the consumer to know a product's efficiency before buying, and protecting consumer safety and health and the environment. In practice:
Checking your tyres takes only minutes: look at the wear indicators, inspect the sidewall, notice the wear pattern and read the manufacture date. If a danger sign appears, do not postpone the change; choose a replacement with the recommended size, load and speed ratings, then fix the cause of any uneven wear.

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A five-seat family car is usually enough if no more than five people ride with you regularly and the child seats you need install correctly in the rear seat, while a seven-seat car becomes the practical choice when your regular passengers exceed five or you often travel with relatives. Seat count alone does not settle the decision, though: boot (trunk) space, access to the back row and child-seat fitting all need to be tried in the actual car. This guide walks you through the choice, from counting passengers to a final checklist.
Start with the number of passengers, not just the size of your family, and write down two clear scenarios to compare each car against:
If the third row would be used only a few times a year, a five-seat car with a large boot may suit your daily life better, and bigger trips can be handled in other ways. If you would need it almost every week, put it at the top of your priorities.
The table below is a general comparison; details can differ greatly between models, so verify them in the car you are considering.
| Aspect | Five seats | Seven seats |
| Passengers | Enough if regular passengers do not exceed five | Suits households with more than five regular passengers |
| Boot space | Fairly constant because the rear row does not change | Shrinks considerably with the third row up and grows when it is folded |
| Getting in and out | Simpler, with no extra row | Reaching the third row means folding or sliding a seat |
| Rear-row comfort | Usually seats three, though middle-seat comfort varies between cars | In many cars the third row suits children and short trips best |
| Size and parking | Usually smaller and easier in tight spaces | Usually longer and needs a wider parking space |
| Daily running | Usually lighter | Greater weight and size may raise fuel consumption |
The second row may be a single bench for three passengers or two separate captain's chairs with a walkway between them; separate chairs make it easier to reach the back, but they reduce total seating by one compared with a bench.
Luggage space with the third row folded answers a completely different question from the space available with the whole family on board, so compare both configurations:
The US National Highway Traffic Safety Administration (NHTSA) recommends choosing a seat that suits the child's age and size, then making sure it fits the vehicle itself, and referring to the car-seat manufacturer's instructions and the vehicle owner's manual on installing it with the seat belt or the lower anchors and a top tether, if available. In practice this means:
We cover the general steps of a test drive and comparing trims in our new car buying guide; here, what matters is testing the car from your own family's seats.
After you buy, keeping up with routine car maintenance helps keep your family comfortable and safe on long trips.
Not necessarily; in many cars the third row suits children or short journeys best. Have an adult sit in it, and check boot space and payload limits with all seven passengers and their belongings.
It depends on the width of the rear seat, the number of anchor points and the size of the seats themselves. Check the vehicle manual and try installing all three seats together before buying.
Separate seats make it easier to reach the third row and give their occupants more comfort, but they reduce total seating by one compared with a bench, so choose according to your passenger count.
Not on its own; the seating layout, floor height and boot opening shape all affect the usable space, so try sitting in the car and loading your belongings yourself.
When regular passengers on most journeys do not exceed five, and trips needing more seats are rare and can be handled in another way.
The right family car is the one that serves both your normal day and your longer trips, not the one with the most seats. Count your passengers, try the third row, child seats and your own belongings, then compare the results calmly. You can also browse the cars available at Saleh Cars Group to compare options that suit your passenger count.

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Car brand logos are the badges and names each manufacturer places on the front grille, the boot lid and the centre of the steering wheel, and the easiest way to learn them is to group them by country of origin: Japanese badges such as Toyota's three ovals, Korean ones such as Hyundai's slanted H, and Chinese brands, many of which spell out their full name in Latin letters, alongside German, European and American badges. In this guide you will find each brand's name as it is written and said, a short description of its badge, its meaning where it is documented, and a table for quick comparison.
A car badge (the logo or emblem) is the trademark that identifies the manufacturer, and it usually appears in several places:
Badges fall into two types: a standalone symbol such as a star, rings or a lion, or a name spelled out in letters, as with many American and new Chinese brands, and knowing this difference helps you recognise a car from a distance.
Japanese badges are very familiar on the Kingdom's roads, and most are simple symbols that are easy to remember:
Chinese cars have become familiar in the Saudi market, and their best-known badges include:
Many Chinese brands have appeared in recent years, some cannot be recognised from the badge alone, and here are practical ways to tell them apart:
European badges often rely on old symbols with well-known stories:
American badges tend towards written names and simple shapes:
A quick summary of each brand's badge:
| Brand | Country of origin | Badge description |
| Toyota | Japan | Three ovals |
| Nissan | Japan | Name inside a thin circle |
| Honda | Japan | Upright letter H |
| Mitsubishi | Japan | Three red diamonds |
| Hyundai | Korea | Slanted H in an oval |
| Kia | Korea | The word KIA in a sharp script |
| Changan | China | V shape inside a circle |
| Chery | China | A-like symbol in an oval |
| Jetour | China | Name in Latin letters |
| Haval | China | HAVAL in large letters |
| MG | Britain (Chinese owner) | MG inside an octagon |
| BYD | China | The letters BYD |
| Mercedes-Benz | Germany | Three-pointed star in a circle |
| BMW | Germany | Circle with blue and white quarters |
| Audi | Germany | Four interlinked rings |
| Volkswagen | Germany | VW letters in a circle |
| Peugeot | France | Lion |
| Ford | USA | Blue oval |
| Chevrolet | USA | Gold bowtie |
| GMC | USA | Red GMC letters |
Car brand logos become easier to remember when you link each badge to its country and parent company, read the name written on the boot when in doubt, and check the registration card and the VIN before any purchase decision. You can browse the cars available at Saleh Cars Group to get to know the different brands and models.

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If you are involved in a traffic accident, God forbid, start with safety: stop in a safe place, turn off the engine and switch on the hazard lights, place the reflective triangle at a safe distance, then photograph the accident from all directions and have your ID, driving licence and vehicle registration (istimara) ready. Then report to Najm on the toll-free number 199033 if there are no injuries and at least one party to the accident holds a valid insurance policy. If there are injuries, or an insurance policy is not available for every party to the accident, call the traffic police on 993, and call the ambulance on 997 when there are injuries. Below are the Najm reporting steps as the company publishes them, the cases it does not handle, and what to check on your car after the accident.
Your safety and the safety of those with you come before anything else. Najm's car accident advice page (in Arabic) summarises the first steps as follows:
Najm's guidance explains that staying at the scene protects your rights and the rights of others, and that leaving it may expose you to additional violations and fines. If a fire breaks out, God forbid, it advises using the fire extinguisher safely, not using water to put the fire out, and turning off the engine and getting out of the vehicle.
Najm's accident reporting procedures page (in Arabic) sets out what is needed to report after stopping in a safe place:
The company states that the Najm investigator uses a body camera to document the facts of the accident to protect the rights of all parties, and that it handles accidents without charging the parties to the accident. It also offers the Najm smartphone app for faster electronic procedures.
These procedures may be updated from time to time, so confirm the latest steps on Najm's website or official app before relying on them.
Najm does not handle every accident; according to its official page, it does not take on the following cases:
These accidents can be reported to the authorities Najm lists. These are the contact numbers on its pages:
| Authority | Number | What Najm's guidance says |
| Najm (toll-free number) | 199033 | Reporting the accidents Najm handles |
| Traffic Accidents | 993 | When there are injuries, or an insurance policy is not available for every party to the accident |
| Ambulance (Red Crescent) | 997 | When there are injuries |
| Unified Operations | 911 | Listed for accidents Najm does not handle |
| Civil Defense | 998 | Listed for accidents Najm does not handle |
| Road Security | 996 | Listed for accidents Najm does not handle |
Najm advises photographing the accident from all directions so you can refer to it when needed. To make the photos genuinely useful, take them in this order, without standing in the traffic lane:
Once the procedures are finished, do not assume the car is sound just because the visible damage is small; a light impact can affect parts behind the bumper or the tyres. Check the following with the car parked in a safe place:
If the airbags deployed, you notice a leak or a smell of fuel, a red light stays on, or the steering feels abnormal, do not keep driving, and ask for a tow truck to take the car to the workshop.
Many modern cars place radar and parking sensors in the bumper or behind the front grille, and the driver assistance camera behind the windscreen. So repairing or replacing the bumper, replacing the windscreen, or adjusting the wheel alignment after an accident can change the angle of these sensors even slightly, and they then need calibration according to the manufacturer's instructions.
You will find an explanation of these systems, the limits of their sensors and when they need calibration in our article on ADAS driver assistance systems.
Najm's website offers services to follow up an accident after it has been handled, including:
When the car is repaired, keep a copy of the report and photos of the damage before and after the repair, and review the quality of the bodywork and paint when you collect it; our article on what it means when a car has been repaired helps you notice colour differences and uneven gaps between panels.
In short: your safety first, then the hazard lights and the reflective triangle, then the photos and documents, then reporting through Najm on 199033, or calling the traffic police on 993 when there are injuries or an insurance policy is not available for every party. Do not keep driving before checking the lights, tyres, leaks and dashboard warning lights, and make sure the sensors are calibrated after a bumper or windscreen repair.

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The difference between the two types of car insurance in Saudi Arabia is that third-party insurance, which is the compulsory insurance, compensates the third party for the physical and material damage your vehicle causes and does not cover your own car, while comprehensive insurance compensates you for damage or loss to your car, including fire, theft, floods and hail, and also includes liability towards third parties. Here we explain what each type covers and excludes as stated in the official documents, what the deductible means, and how to choose the right policy.
These are the main differences as stated in the Saudi Central Bank documents; the details follow in the next sections:
| Item | Third-party | Comprehensive |
| Status | Compulsory | Not compulsory; includes third-party liability cover |
| Physical and material damage to third parties | Covered within the policy limits | Covered as per the unified policy |
| Damage to your car in an accident you cause | Excluded | Covered after deducting the deductible |
| Fire, theft, floods and hail | Not covered for your car | Included |
| Towing your damaged car and storing it | Not provided for | Included up to the amount stated in the schedule |
| Death or injury of the driver | Excluded | An optional cover offered before the policy is issued |
The Unified Compulsory Motor Insurance Policy sets the minimum limit of civil liability cover towards third parties. If an accident occurs within the borders of the Kingdom and causes damage that is not excluded, the insurer compensates the third party for what the insured, the driver or the person responsible for the accident is liable to pay for:
A third party is anyone who suffers damage that is not excluded, other than the insured or the driver responsible for the accident; so this insurance protects others from your mistakes and does not repair your car. Subject to the exceptions, the insurer may not refuse to compensate the injured party because of a violation committed by the driver, but it keeps the right to recover from them in cases set out in the policy, such as driving against traffic, running a red light, and driving without a licence suitable for the type of vehicle.
Cases the unified policy excludes from compensation include:
According to the Comprehensive Motor Insurance Rules, the company compensates the insured for any risk causing damage or loss to the vehicle, including fire, theft, lightning and natural disasters such as floods and hail, in addition to third-party civil liability as per the unified policy. Compensation works as follows:
Before issuing the policy, the company must offer you optional covers: renting a replacement vehicle, roadside assistance, death, injuries and medical expenses of the driver or named driver, and accidents outside the Kingdom; any you decline become excluded.
The main exclusions in the rules include:
The company and the insured may agree to waive any exclusion unless that conflicts with the law, so ask about the ones that matter to you before signing.
The rules define the deductible as the amount borne by the insured for any claim as stated in the policy schedule, and they control how it is applied:
In practice, it is what you will pay out of your own pocket in every accident you are liable for, so compare offers by it as well, not by the policy cost alone.
The decision depends on whether you could bear the cost of repairing or losing your car yourself, so review these factors:
The policy schedule is an integral part of the policy, so check:
These provisions may be updated, so confirm the latest version on the official website of the Insurance Authority, and the terms of your policy with a licensed insurance company.
In short: third-party insurance is the compulsory minimum that protects others from damage caused by your vehicle, and comprehensive insurance adds protection for your own car in return for a deductible you agree on. Choose according to your car's value, its financing and how you use it, and read the policy schedule before you pay. If you are looking for your next car, you can browse the cars available at Saleh Cars Group.