Should I idle my turbo petrol engine before switching it off?
I have just bought a new Audi Q3 1.4 TSFI. I have not owned a turbo car before and understand that you should let the car idle for a while before switching off following certain driving conditions. Please would you clarify if this is the case with the Q3?
Yes. Idle the car for a minute or two before switching off after constant speed on the motorway, after long ascents and, of course, after driving hard at high revs. No need to do this in general low speed city and suburban driving. The reason is to ensure coolant and oil flow through the very hot turbo as it cools down.
Answered by Honest John on