Ask Honest John

Most recently answered turbo engines questions
I'm looking to buy a modest petrol engined family/supermini. I dislike turbos for their turbo lag. Can you tell me which cars I might consider that have a naturally aspirated petrol engine of circa 1600cc...
I have a 2012 Volkswagen Scirocco 2.0 TDI BlueMotion. It broke down last week with plumes of white smoke coming from the exhaust. It was towed back to my local dealer and they tell me the turbo has failed....
I have recently purchased a 3 Series BMW 320i Xdrive and assume it has a turbocharger fitted. With previous turbocharged cars I have always allowed a couple of minutes for the turbo to stop rotating and...
I have just bought a 1996 Audi A4 Estate. The turbo has now suddenly blown, with black smoke coming out of the exhaust. Thankfully we were near a garage and only drove it very slowly and carefully for...
My Audi S6 is three years old, with 72,000 miles on the clock. I have just had double turbo failure (£4000 to repair). My local Audi specialist has discovered it is due to a faulty oil pump, which they...
I have heard reports of the 1.6 diesel engine fitted in Peogeots, Citroens & Fords to suffer from damaged turbos due to lack of correct maintenance and not selecting the correct oil type. Subsequently...
My FIAT 500 TwinAir is the third car I have owned with a turbocharger and the first with a stop-start system which is on by default. When stopping after a long fast run (e.g. a queue at a motorway exit...
I have just bought a new Honda CR-V. The vehicle has two turbo-chargers giving the 1.6 diesel engine the same power as the diesel 2.2. I have read in your column that it is essential to allow the turbo-chargers...
The turbocharger on my Ford Focus TDCI (2005 model) has failed. I've paid to have a new one fitted, but been told there is basically no guarantee that it wont go again. My question is has anyone had this...
I have a 2009 model Volvo V50 1.6 Drive SE (90,000 miles) which has developed turbo problems which I gather is common with this engine due to carbon buildup etc. I love the car but cannot afford to keep...