Are diesels as economic as they used to be?

I am due to replace my BMW 330 diesel coupe this year. I drive around 20,000 miles a year, mainly on motorways. With the gap in prices between petrol and diesel widening, I have started to question whether...

Do the KIA Sportage or Nissan Qashai have any particular problems?

I am about to change my car. I can spend in the region of £20,000 plus whatever I can get for my 2004 Mondeo Ghia X 2.0TDCI with 46,000 miles. I tow a small caravan occasionally and my current annual mileage...

Looking to replace my 2011 Skoda Octavia with a petrol car to avoid DPF problems - what do you suggest?

I have an 8000 mile 2011 Skoda diesel Octavia estate but now no longer do the miles needed to avoid DPF problems. I need a car (not necessarily an estate, but I wouldn't mind another) to cope with golf...

Does the Qashqai's Renault engine avoid DPF problems?

I currently own a 2002 diesel, and do a lot of journeys of only two miles and a few journeys of nearly 1000 miles. I assumed I could not buy a new diesel due to DPF problems until I read of a Renault engine...

What is causing my E-Class Mercedes-Benz to break down, and will Mercedes-Benz be liable after my warranty expires?

I have an E-Class Mercedes that I absolutely love to drive, but have had two breakdowns due to a fault in the fuel injection system. Mercedes has provided fantastic service both times my car has been off...

Should I buy a petrol or diesel BMW or Mercedes?

I feel it is time to treat myself and am proposing to purchase either an E-Class Mercedes-Benz estate or 5 Series BMW Touring. Either will be less than a year old, but the question I am really stuck on...

Is the Ford Focus 1.6 TDCI diesel a reliable, trouble-free car?

I am considering buying a nearly new Ford Focus 1.6 TDCI. From all reports this would appear to be a very good car, but I am 70 years old and would prefer trouble-free motoring, and I am concerned about...

Why is my Audi A6 TDI's fuel economy so poor?

The fuel economy of my 2007 Audi A6 2.0TDI Avant Multitronic has always been poor from new at 34mpg, rising to 40 in mid 2011 and now having dropped steadily back to 33mpg. Most of my mileage consists...

Does BP Ultimate diesel compare to Shell V-Power?

You confirmed last week that Shell V-Power diesel has advantages over ordinary diesel in terms of particulates and improved performance. I similarly use BP Ultimate diesel in the expectation that it should...

Mini Clubman or Fiat 500?

I am considering changing our second car for a small, cheap-to-run car with low tax. I would buy newish. A Fiat 500 or Mini Clubman both appeal, the Mini possibly as a diesel and the Fiat as a 1.2-litre...