Can you recommend a reputable turbo supplier or repairer?

The inlet hose came off my 2008 Toyota Avensis 2.2 diesel (106,000 miles) and unfortunately it sucked in some debris which has damaged the air compressor blades causing a loss in turbo pressure. I have...

Can a failed DPF regen cause oil contamination in the engine?

My 2013 Mazda 6 diesel recently had a low oil pressure warning light come on. I stopped driving immediately and got towed to my Mazda dealer. They changed the oil and said it was contaminated (they didn't...

Why is the 1.6 TDI EA189 more susceptible to EGR problems than the 2.0 TDI?

I have been told that the Volkswagen 1.6 TDI EA189 has a common fault with the EGR valves, but the 2.0 TDI EA189 doesn't seem to be as bad. Why does the 1.6 have this problem more frequently than the 2.0?

What should I check when buying a diesel Renault Megane?

I have a 2002 Renault Megane 1.9 dCi. The car has around 83,000 miles and has been owned from new by a family friend. Over the past 10 or so years the car has had oil changes every 5000 miles. Should this...

Need a reliable used family car - any suggestions?

We have a 2012 Ford Focus estate that my wife wants to get rid of and replace with something with a higher seating position. We have shortlisted two cars: 2013 Scenic XMod 1.6 diesel with 60,000 miles...

Can the Volkswagen Emissions Fix be reversed?

I have had the corrective emissions work done on my SEAT Exeo and found the fuel economy to be worse by 5-10 per cent. Can the procedure be reversed?

Volkswagen Tiguan is really noisy since emissions fix - what should I do?

My Volkswagen Tigaun has just had its emissions fix. However, since getting the car back, I've noticed that the engine is much nosier. It used to be nice and smooth, but now it is making a growling noise,...

Volkswagen Caravelle engine fault - what are our rights?

Our vehicle is a Volkswagen Caravelle DSG with over 70,000 miles on the clock. The problem appears to be the EGR cooler corrodes internally, producing aluminium oxides, and this then passes into the intake...

Tiguan clutch failure after emissions 'fix' - are the two related?

The clutch has failed in my 2.0 litre diesel Volkswagen Tiguan. This actually happened while on my way home from repairing the emissions defeat device. Is this a complete coincidence or would they have...

How can I improve the reliability of my Skoda Superb DSG?

You have often commented in your column in The Telegraph on the pros and cons of the VAG DSG gear box. I have a 2012 Skoda Superb Estate which I have had remapped to give just over 200PS (and yes, my insurance...