Can I remove the DPF from my Jaguar XF?

I have a Jaguar XF 2.7 Diesel and probably do too many short runs for the diesel particulate filter, averaging only 8000 miles a year. So far the light has not come on and I have encountered no problems...

Has Audi programmed in throttle damping to reduce noise on my R8?

I have a new Audi R8 V8 manual and I have noticed a hesitation when accelerating hard from 30mph in third gear. It turns out that this corresponds with the EC ‘drive-by’ noise test, so, to pass this test,...

Will the new MOT regulations force older cars off the road?

The latest heavy-handed MoT legislation by the EU will force many perfectly safe, usable, older cars off the road. The costs of rectifying faulty warning lights will, in most cases, be prohibitive, particularly...

Why are Toyota's mpg figures so far removed from reality?

It can surely be little short of misleading to promote the Toyota Prius based on one particular quality, which, in real life, will never be displayed or achieved. I would reiterate that I am happy with...

Why doesn't the UK government make winter tyres compulsory?

A new convert to the virtues of adding cold weather tyres to my car following your admonitions, I have to say 'thank you'. The car is not only safer but a tad more comfortable. But a new concern has arisen...

Why are new cars sold with misleading fuel economy figures, like my new Ford Focus EcoBoost?

I would like to warn any of your readers wishing to save money on fuel that the new Ford 1.0 EcoBoost engine is not the way to go. I recently bought the Ford Focus Zetec EcoBoost 125 and the mpg is seriously...

Why has the USA banned the practice of misrepresenting fuel consumption figures?

I thought your readers might be interested to know that when we were in Texas 2 weeks ago we saw a Fiat 500 Pop (1.4 MultiAir) as part of a promotion in a shopping mall. Interestingly the official fuel...

Is there still a market for small, basic, economical cars?

We bought our 1998 Fiat Panda 0.9-litre for 1400 Euros six years ago. It has now covered over 150,000km, and we have done 54,000km of those. It will comfortably cruise at 70 mph on a motorway. It is running...

Please see this website for information about daytime running lights.

Readers interested in the facts about daytime running lights (letter "Glaring Error?") should visit www.lightmare.org

Why does the failure of cheap ESP modules cause serviceable vehicles to be scrapped?

My guess is that the price out of the factory for ESP modules is not much more than a few pounds. Presumably there is no real competition for replacement units because of trade restrictions and practice....