Why Is The NEDC Out Of Date?

Why is the NEDC out of date?

The NEDC (New European Driving Cycle) was introduced in 1992. Since that time, cars, roads and driving behaviour have changed quite a bit. It's an artificial laboratory test that helps compare vehicles, without reflecting day-to-day driving and fuel consumption.

 

Actual consumption today is often very different from the NEDC information. The main reasons include:

 

  • The theoretical driving profiles NEDC uses don’t match real user profiles
  • Insufficient acceleration
  • Too many stop-and-go phases
  • NEDC doesn’t incorporate higher speeds, which sets the average speed too low
  • Gear shifting points are broadly defined by transmission type, so they're the same for all cars with manual transmission
  • Optional equipment isn't taken into account