Put simply, it was a procedure where certain diesel engines fitted to VW, Audi, Seat and Skoda models were set up to reduce typical emissions under test conditions.
A piece of software that could ‘detect’ when the vehicle was under test conditions would alter engine settings so emissions were lower than in normal use.
Once the vehicle was used in typical driving conditions, the software would alter the engine settings to - amongst other things - adjust the fuel air mixture to pre-test conditions and to a state where its emissions were higher than during emissions testing.
Does the VW software affect fuel economy figures?
No, the software was designed purely to affect exhaust emission readings.
What engines are affected?
It’s just certain diesel engines - not petrol - and applies to certain 1.2, 1.6 and 2.0 capacity variants of the company’s EA189 engine.
How many vehicles are affected?
Worldwide some 11 million of these diesel engined VAG vehicles are affected with over 1.1 million of them featuring in UK sold models.
In the UK, this applies to over half a million VWs including nearly 80,000 commercial vehicles; nearly 400,000 Audis; just over 130,000 Skodas and just over 75,000 Seat models.
How would I know if my car is affected?
VW, Audi, Skoda or Seat should have - or will soon - contact you direct to ask you to bring your car into a franchised dealer to have the ‘fix’ performed.
If you’ve heard nothing but want to clarify whether your car is affected, each make in the VAG group has a checking facility on their respective website. Enter your VIN number to see if you are affected.
What happens to my car at the recall?
For 1.2 and 2.0 diesels, it’s a software ‘tweak’ while 1.6 diesels require a hardware change - a device called a ‘flow transformer’ has to be fitted which helps the engine’s computer to work out the appropriate air and fuel mixture.
What if I’m thinking of buying a new VW, Audi, Seat or Skoda diesel?
New models use a newer generation of diesel engines so aren’t affected by ‘dieselgate’.
I’ve had the software update but my car doesn’t perform as well as it did before. What can I do?
Get in touch with us at Dynomap and we’ll advise and help. We may be able reverse the software update (which is perfectly safe) and return your car to its former reliable running state.