To read a fuel economy label, start with the km/L value: the number of kilometres the car travels on one litre of fuel. The higher the number, the more economical the car. Next, make sure the label belongs to the exact model, model year and engine capacity you intend to buy, verify it through the Taakad app, and then divide your annual distance by the figure to estimate how many litres you will need each year. This guide explains the label's fields, how to compare and calculate with an illustrative example, and why your car's real-world consumption may differ from the printed figure.
What is a vehicle fuel economy label?
A fuel economy label is a sticker you will find on new cars. It shows the model's fuel economy value in kilometres per litre, together with a level that rates this value. According to the Saudi Press Agency report on the Letabqa energy conservation campaign, the label classifies cars into seven levels: Excellent+, Excellent, Very Good, Good, Average, Poor and Very Poor. The top levels appear in dark green and the lowest in red.
There are two types of label, depending on how the vehicle is used: one for passenger cars such as sedans and minivans, and one for light trucks such as four-wheel drives, pickups and cargo vans. Pay attention to the label type when comparing, and compare cars of similar size and use wherever possible.
What information does the fuel economy label show?
The label combines the vehicle's basic information with its fuel economy result. According to the same source, it includes:
- The manufacturer's name and the vehicle's trade name (model).
- Engine capacity and model year.
- Vehicle type: passenger car or light truck.
- The fuel economy value in kilometres per litre, and its corresponding level.
- The required fuel type: 91 petrol, 95 petrol or diesel.
- The logo of the Saudi Standards, Metrology and Quality Organization (SASO), the label's regulatory statement, and a QR code.
Before focusing on the number, match these fields with the car in front of you, especially the model year, engine capacity and fuel type. A single model may come with more than one engine or trim, and each may have a different value. Take a clear photo of every label so the details do not get mixed up if you visit several showrooms.
How do you read the km/L figure and compare two cars?
The km/L figure tells you how far the car travels on one litre. A value of 18 km/L, for example, means the car covers 18 kilometres per litre according to the label value. With this unit, the higher number is better. When comparing:
- Read the value itself rather than relying on the colour alone; two cars at the same level may have different values.
- Make sure both labels are of the same type, passenger car or light truck.
- Pay attention to fuel type; if one car needs 95 petrol and the other 91 petrol, calculate each car's cost using the price of its own fuel.
- Do not carry a value from one trim or engine to another version just because the trade name or exterior looks the same.
- Treat fuel economy as one factor alongside space, comfort, safety and maintenance; our guide to the best fuel-efficient cars can help you narrow your options.
How do you verify the label with the Taakad app?
The Saudi Standards, Metrology and Quality Organization provides the Taakad app for checking fuel economy label and energy efficiency label information, and it can be downloaded free for iOS and Android devices. The steps, as described on the app's page and in the previous source, are:
- Open the app, choose the vehicles section, and point the camera at the QR code on the label.
- If the vehicle is registered in SASO's database, its details will appear, such as manufacturer, engine capacity, model year, fuel type, body type, drive type, transmission, fuel economy value and level.
- Compare the details shown in the app with the label on the car, field by field.
- If there is no QR code on the label, use the app's search feature.
- If the details do not match, use the report feature, which takes you to the Commercial Report app.
How do you calculate the fuel you need each year?
The formula is simple: annual distance in kilometres ÷ fuel economy in km/L = estimated fuel in litres. To estimate your annual distance accurately, compare the dashboard odometer readings on two service records about a year apart, or take a typical week's distance and multiply it by the number of weeks in a year, then add the trips you know you will make.
Illustrative example: an annual distance of 20,000 km and two cars, the first rated at 15 km/L and the second at 20 km/L. These are hypothetical teaching figures only, not specifications of cars offered for sale.
| Item |
First car |
Second car |
| Assumed fuel economy |
15 km/L |
20 km/L |
| Annual distance |
20,000 km |
20,000 km |
| Calculation |
20,000 ÷ 15 |
20,000 ÷ 20 |
| Estimated quantity |
About 1,333 litres |
1,000 litres |
The difference in this example is about 333 litres a year. To turn it into an amount of money, multiply each car's quantity by the price per litre of the fuel it needs at the time of comparison, then subtract the two results.
How do you convert km/L to litres per 100 km?
Some brochures, websites and dashboard displays show consumption in litres per 100 km, where the lower number is better. To convert, divide 100 by the km/L value; to convert back, divide 100 by the L/100 km value:
- 15 km/L: 100 ÷ 15 = about 6.67 litres per 100 km.
- 20 km/L: 100 ÷ 20 = 5 litres per 100 km.
- In reverse: 5 litres per 100 km means 100 ÷ 5 = 20 km/L.
This unit reveals something many people overlook: the same increase in km/L saves more fuel when the starting value is low. In another illustrative example over 20,000 km, moving from 10 to 12 km/L saves about 333 litres, while moving from 20 to 22 km/L saves only about 91 litres. Do not compare a km/L figure with a figure in another unit, such as miles per gallon, before converting to the same unit.
Why does your real consumption differ from the label figure?
The label figure is a reference value that helps you compare models, but it does not describe your own driving style or road conditions. The main things that change real-world consumption are:
- Driving style: sudden acceleration and braking, and high speeds on highways.
- Heavy traffic and frequent stops, and leaving the engine running for long periods while parked.
- Running the air conditioning for long periods in summer heat.
- Excess load and low tyre pressure.
- Maintenance condition, such as the air filter, spark plugs and engine oil.
Use the label for an initial comparison, then monitor your car's consumption over several refills. If consumption rises clearly and persistently above your usual level, read about the common causes of higher fuel consumption and arrange an inspection when needed, rather than assuming the label is wrong. If your car offers an economy driving mode, learn about the ECO system and whether it really saves fuel.
How do you measure your car's consumption yourself?
The most accurate home method is the full-tank method, and all you need is the dashboard trip meter and your fuel receipt:
- Fill the tank until the pump nozzle clicks off automatically, then reset the trip meter.
- Drive the car as usual until you need to refuel.
- Fill the tank again until the automatic click-off, and note the litres added and the distance on the trip meter.
- Divide the distance by the litres; if, for example, you drove 500 km and added 40 litres, your consumption is 12.5 km/L.
- Repeat over several refills and in different conditions, in the city and on the highway, then take the average.
The consumption reading on the trip computer is useful for daily monitoring, but it is an estimate and may differ slightly from the manual calculation, so rely on the manual calculation for long-term comparison.
Frequently asked questions about the fuel economy label
- Is a higher number on the label always better? Yes when the unit is km/L; with litres per 100 km, the lower number is better.
- Does the label guarantee the consumption I will get? No. It is a value for comparison, and your real consumption depends on driving style, roads, load and the car's condition.
- Does a larger tank mean better economy? No. Tank capacity determines the distance between refills, while fuel economy describes distance per litre.
- Can I compare a sedan with a four-wheel drive using the label? The unit is the same, so you can compare the two values, but each has a different label type, and the fairest comparison is between cars of similar size and use.
- What should I do if the label does not match the Taakad app? Ask the seller for an explanation, and use the app's report feature if the difference remains.
The fuel economy label is a quick comparison tool if you read it in the right order: match the details, verify them through the Taakad app, then turn the figure into litres that fit your distance. When you compare cars at Saleh Cars Group, ask for the label of the version that interests you and calculate your own needs before deciding.