Ask Honest John

Most recently answered turbo engines questions
I am planning to purchase a Ford Focus 1.0-litre with the Ecoboost turbocharged petrol engine. Have you had reports of any reliability problems with this new engine?
I want to buy a Range Rover Sport 3.0 HSE, and I'm aiming to secure an 11 plate with 12 to 20K miles on the clock. However I have a dilemma and it’s all about the diesel engine - for years I have done...
I have a 2005 Nissan X-Trail and it has had a new turbo and intercooler. Apart from the turbo issue, the car has been very reliable and I have been pleased with it. I would like to buy the newer version...
Three years ago I bought a Mondeo 2.0TDCI, good condition, full service history, 39,000 miles (now 48,000) to tow my caravan, which it has done very well. Three weeks ago while driving solo the turbo cut...
I bought a new Mercedes E280 CDI in 2008. Is it reasonable for the turbo to have blown after only 35,000 miles?
I am touring on the continent with my 2005 CRV 2,2 CDTi (89,000 miles) towing a caravan, which I have done with this car since 2007 when I bought it. Cruising at around 50mph on the motorway the engine...
I was interested in your comments about letting a very hot turbo idle for 30 seconds before switching off. Am I correct in interpreting this as applying to all turbos regardless of make of car? Last December...
We have a 2011 Ford Mondeo Estate Titanium X 2.0 litre petrol model. We cannot find details of the optimum revs for each gear. Is this model turbo boosted and if so does your advice re leaving engine to...
The turbo on my diesel Focus 1.6 TDCi (2006) has failed - will this mean automatic failure of the MOT?
Do half hour stints on the motorway warrant disabling auto stop-start so as to avoid engine cut-out when hitting inevitable traffic lights immediately after exiting a motorway? You note in previous questions...
 

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