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WLTP (Worldwide Harmonised Light Vehicle Test Procedure) is a laboratory test used to measure a car’s fuel consumption and emissions, and has been designed closely to match modern driving conditions in its testing. It also determines how much road tax and company car benefit-in-tax will have to be paid.


Previously, fuel consumption was measured using the NEDC (New European Driving Cycle) test that was introduced in the 1980s, but this became outdated.


The conditions of the new WLTP test are defined by EU law and have been implemented across Europe. This test provides a more accurate basis for calculating a car’s fuel consumption and CO2 emissions and helps to ensure that quoted performance figures reflect the on-road performance of your new car.


WLTP tests your car to see how much fuel it consumes and how efficiently. There are several differences between the old NEDC test and the WLTP method. Some of the main differences are:

     1. The WLTP test is over a longer distance, under more rigorous conditions and a greater range of driving situations compared to NEDC

     2. The test speeds are higher to reflect modern motorway driving styles

     3. A wider temperature range is used

     4. All vehicle equipment is taken into account 

These changes mean that the WLTP gives a more accurate representation of a car’s fuel consumption and efficiency.





Here are some of the main timings that apply to all car brands:

  • 1st September 2017Since this date all new vehicles introduced must have been tested under WLTP conditions
  • 1st September 2018 - All new vehicle registrations must be tested under WLTP
  • January 2019 - Advertised vehicle data to include WLTP fuel consumption data
  • 1st April 2020 - All new cars registered to be taxed according to the CO2 emissions figure measured under the WLTP test cycle.


With the old NEDC test, you’ll be familiar with seeing three fuel consumption figures and one figure for CO2 emissions. Vehicles tested under the WLTP method have five numbers for fuel consumption and one CO2 emissions figure plus an NEDC equivalent (NEDCC) CO2 emissions figure.

WLPT Fuel Consumption chart for old NEDC models WLPT Fuel Consumption chart for newer models



All current Suzuki models have been tested using WLTP. There is no change in specification of a Suzuki model tested under WLTP vs. the same Suzuki model tested under the old NEDC process – actual fuel consumption and CO2 emissions are the same.


It’s important to understand that WLTP simply represented a new and more accurate method for measuring a car’s fuel consumption and C02 emissions, which is why the data published for WLTP models appears different from the older (NEDC) data published for the same vehicles.

From great value, fun to drive small cars to capable SUVs with ALLGRIP 4-wheel drive*, the Suzuki range has got you covered. And there's a range of dynamic Hybrid options to choose from, which all deliver great fuel efficiency, low CO2 emissions and a great driving experience.

To find out more about our Hybrid cars, click here.

Full details about the WLTP test and background can be found here:

* Available as an optional extra on selected models.