Ask Honest John

Most recently answered petrol engines questions
I recently bought Volkswagen Scirrocco 1.4 TSI for my son. It has had two previous owners and was bought from a second hand car dealer with 39,000 miles on the clock (sadly not a Volkswagen dealer). In...
In your opinion, what's the best, modern petrol engine in the 1.5 to 2.0-litre size? Based on efficiency, smoothness and reliability.
Are all cars with turbos problematic? I keep reading about turbo failures which puts me off buying a new car with a turbo. Do you have to treat these turbo cars in special ways, particularly after a long...
Any idea when the petrol Ingenium engine (252PS already in Jaguar F-Pace) will be launched for Land Rover Discovery Sport?
I want to replace my diesel Estate with a petrol SUV. The Ecoboost engine would be a good choice but I believe the NOx levels are very high. Are there any tables that show comparisons of all cars?
I have a campervan on a Volkswagen T4 chassis. It's registered 2000 and a 1890cc diesel. I'm concerned about the discussion of banning old diesels from towns. Would it be possible to re-engine the car...
I have a 2.0-litre Volkswagen Passat 130 petrol engine car. I would like to replace it with car with a similar size petrol-engined car not turbocharged It seems these days that petrol engines fitted to...
I currently drive a 2005 Volkswagen Golf Plus 2.0 TDI that has done 182,000 miles. What should I replace it with on a maximum budget of £12,000? I need a workhorse to do 20,000 miles a year (80 per cent...
With the upcoming tax changes and the potential backlash against diesel, can we expect to see more petrol engine cars? I would love to see a Ford Kuga with a 2.0-litre 240PS EcoBoost engine.
I'm used to driving a small diesel but I now want to change to a small petrol car. I'm looking at the Kia/Hyundai 1.0 turbo engine in the Kia Rio, they seem to be high torque (171Nm kicking in from 1500...