Opel leads the way: As of now, you can find fuel consumption data that is based on the future WLTP (Worldwide Harmonized Light-Duty Vehicles Test Procedure) applicable driving cycle. From autumn 2017, the WLTP driving cycle will be made legally binding and unlike the current compulsory NEDC (New European Driving Cycle), it relates closer to modern driving behavior. Therefore we are already making it easier for customers to estimate the daily consumption of their vehicles. The first car we have measured is the Astra, more models will follow later this year.

* According to Regulations (EC) No 715/2007 and (EC) No 692/2008 (in the version currently applicable.). The figures do not refer to a specific vehicle and are not part of a specific offer but serve purely for comparing various types of vehicles.

 

** The lower value represents the lowest measure-ment taken from the four phases of the WLTP cycle, using the fuel consumption of a vehicle with the most economical vehicle equipment of the relative engine and transmission combination. The upper value represents the highest measurement of the four WLTP cycle phases, taken from the corresponding fuel consumption of the most fuel-intensive equipped vehicle. More details.

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  • HOW YOU BENEFIT: MORE REALISTIC CONSUMPTION FIGURES.

    The new WLTP driving cycle takes into account situations that are closer to everyday life than the current NEDC standard. It allows you to assess daily consumption better.

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  • WHAT IS THE WLTP DRIVING CYCLE?

    The WLTP driving cycle consists of several phases, which are based on everyday driving profiles of motorists from around the world.

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  • FUEL SAVING MADE EASY

    Factors such as vehicle design and the weather can affect fuel consumption in ways that you can't control. But did you know that you can influence up to 1/3 of your consumption?

  • TIP 1:

    SAVE ON WEIGHT TO SAVE ON FUEL!

    Pack only essentials in your car, because every additional gram uses more fuel. And speaking of weight reduction: remove the roof rack and rear carrier when not needed.

    TIP 2:

    DON'T WASTE TIME AND FUEL!

    Modern engines don't need warming up - that consumes fuel unnnecessarily. It's better to just get in, start and go!

  • TIP 3:

    MOVE UP A GEAR!

    A simple rule for fuel-saving shifting: 30 km/h in 3rd, 40 in 4th and so on. And when the light turns green, don't forget: shift to 2nd after a car length and save even more!

    TIP 4:

    SAVE ON ELECTRICITY!

    Pleasant extras often use lots of energy. So use air conditioning, seat heating and other electric equipment with care. Small things help, like parking in the shade and cross-ventilating your car when it's hot.

  • TIP 5:

    GO WITH THE FLOW!

    Frequent braking and accelerating increase consumption unnecessarily. It's best to adapt to the traffic ahead in order to prevent inefficient stop-and-go driving.

    TIP 6:

    SAVE YOURSELF THE RACING!

    Everyone knows that time is money, but on the motorway, patience pays off. Raising your speed increases fuel consumption disproportionately and empties your tank faster.

  • TIP 7:

    GIVE YOUR CAR A SHORT BREAK!

    If you have to stop for longer than 10 seconds, it's worth switching off the car to save fuel. By the way, many Opel vehicles already have an automatic start/stop mechanism.

    TIP 8:

    DON'T SAVE ON MAINTENANCE!

    You should also have your car checked regularly: You might just need a new air filter or sparkplugs, but you can only drive efficiently when every part works as it should. Also: Don't drive with low tire pressure - it increases rolling resistance.

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  • OVERVIEW

  • TIP 1 & 2

  • TIP 3 & 4

  • TIP 5 & 6

  • TIP 7 & 8

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QUESTIONS ABOUT THE NEW CONSUMPTION VALUES.

Why is the NEDC out of date?

The NEDC (New European Driving Cycle) was introduced in 1992, however cars, roads and driving behavior have changed since then. The NEDC is an artificial laboratory test and serves exclusively to compare different vehicles, not to reflect normal consumption. This means that real consumption is often very different from the NEDC information. The main reasons include:

 

  • The theoretical driving profile does not match real user profiles.
  • Insufficient acceleration.
  • Too many stop phases.
  • Does not incorporate higher speeds, e.g. on motorways. This sets the average speed too low.
  • Gear shifting points are broadly defined by transmission type, e.g. they are the same for all cars with manual transmission.
  • Optional equipment is not being considered.

 

What does the NEDC measure?

The NEDC is legally binding for all vehicles since 1992. The NEDC is based on a somewhat theoretical driving profile and consists of two parts: In the first 13 minutes, it simulates a drive in city traffic with many stop-and-go phases. The second part corresponds to an extra-urban journey at a maximum speed of 120 km/h.

What are the four parts of the WLTP?

In order to determine consumption values more realistically, the WLTP driving cycle is based on a global statistical survey of real driving profiles. This includes four parts with different average speeds which are generally representative for operating profiles around the world: low, medium, high and extra high. Each phase includes different amounts and degrees of acceleration, braking, stopping, etc. that reflect everyday driving situations.

What is the difference between NEDC and WLTP?

Since the introduction of NEDC in 1992 cars and driving styles have changed significantly. The WLTP test parameters have been redefined to reflect real conditions more closely. They now include:

  • Longer cycle times (30 min vs 20 min) 
  • Shorter stopping times (13% vs 25%)
  • Longer distances (about 23 km vs 11 km)
  • Higher speeds (max. 130 km/h vs 120 km/h)
  • Almost 50% higher average speeds
  • Higher maximum acceleration and more acceleration phases
  • Approximtely 20-30% higher driving power based on the more dynamic driving situations
  • More realistic determination of driving resistance for fuel consumption tests
  • Consideration of optional equipment in the vehicle

 

Values obtained with WLTP are comparable worldwide, while the NEDC values are only valid for Europe.

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While the current NEDC determines "urban, extra-urban and combined" values based on of a theoretical driving profile, the WLTP uses "real" driving profiles drawn from a global statistical survey. The WLTP driving cycle is divided into four parts with different average speeds: low, medium, high and extra high. Each part contains a variety of driving phases, stops, acceleration and braking phases, etc. that represent everyday driving profiles. Each engine/transmission combination is tested with the most economical as well as the most fuel-intensive vehicle equipment.

 

Starting with the Astra, Opel will test each and every model. The published values define a range from the lowest to the highest consumption for each engine/transmission combination. This gives a good indication of the expected daily consumption of each model.

 

Please note: The values based on the WLTP driving cycle are determined using a standardised, predefined drive cycle on a test rig.

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The consumption values outlined in the "New European Driving Cycle" (NEDC) are precise and easily comparable, but they are not perfect. Since the NEDC was made legally binding in 1992, cars and individual driving styles have changed significantly. To better reflect the new conditions the test parameters have been redefined in the "Worldwide Harmonized Light-Duty Vehicle Test Procedure" (WLTP).


They now take into account:

  • More realistic driving dynamics and outside temperatures
  • Greater test distances
  • Higher average and maximum speeds
  • Shorter stops
  • More braking and acceleration


The influence of optional equipment also plays a role in the WLTP driving cycle. This new driving cycle will be legally binding for all automobile manufacturers from autumn 2017.

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The driving cycle of the WLTP ("Worldwide Harmonized Light Vehicle Test Procedure") addresses key criticisms of the NEDC ("New European Driving Cycle"). The NEDC is the current measuring method stipulated by Regulations (EC) No. 715/2007 and 692/2008, and it is still legally required to publish fuel consumption and emission values determined accordingly. In particular, the new driving cycle driving profile corresponds more closely to everyday operation, and it is not just measured for a specific trim level, but also takes into account the influence of additional optional equipment.

 

The daily fuel consumption of a vehicle depends very much on the individual usage profile and where it is being driven: city traffic, country roads or motorways. These differences are better accounted for by the WLTP driving cycle. Instead of calculating only the values "urban, extra-urban and combined" (as stipulated by Regulations (EC) No. 715/2007 and 692/2008,) on the basis of a more theoretical driving profile, WLTP provides four individual values for different predetermined travel profiles (low, medium, high, and extra-high) that are based on statistical surveys and the analysis of user profiles and averages. In addition, the WLTP driving cycle is much more dynamic than the NEDC and reflects higher accelerations, a higher average speed and a higher maximum speed.

 

The values released for the Opel Astra from June 2016 show a range that can be explained as follows: The lower value is the lowest value from the four phases of the WLTP, driven with the version of the Opel Astra with the lowest consumption values for the specified engine/transmission combination. The upper value represents the highest value from the four phases of WLTP cycle, driven in the version of the Opel Astra with the highest consumption values for the respective specified engine/transmission combination. The values obtained provide a good overview and a useful indication of the expected daily consumption.

 

Please note, that the values based on the WLTP driving cycle are determined by using a standardised, predefined driving cycle on a test rig.