Buying a used Audi A4 diesel - should I get the EGR valves cleaned?

I'm buying a 2013 Audi A4 diesel with 110,000 miles on clock. I always use Shell V Power diesel and do 30,000 miles driving a year. I intend to keep the car for three years and intend to get my mechanic...

Vauxhall Astra engine management light - what does it mean?

I need to sell my 2006 Vauxhall Astra, but the engine management light stays on all the time. It was mentioned on the MoT advisory, but it passed anyway. Any idea how I can fix it?

Cam belt change intervals for Peugeot 206?

I am looking to buy a used Peugeot 206. I've seen a 2008 model with 24,000 miles on the clock. Can you tell me if I will need to change the cam belt? If so, how much will it cost?

Can I use 10w-40 oil in my Toyota Yaris Verso?

My trusty Toyota Yaris Verso [petrol] runs happily enough on 5w-30 fully synthetic oil. Would there be any problem in topping up between services with some 10w-40 semi-synthetic oil that I have spare?

KIA Sportage won't change gears in the cold

My 2005 KIA Sportage doesn't go into gear when the engine us cold, especially during the mornings. Please can you tell me the cause of this?

Buying a Fiat 500 - hardtop or convertible?

I am interested in the Fiat 500C (TwinAir) but am worried about the maintenance of the fabric roof. I live on a street with lots of trees which drop honeydew in the early summer. I am an OAP and would...

Volkswagen Tiguan emissions fix - what do I need to know?

I have received the invitation to have my Volkswagen Tiguan 2.0 TDI "fixed" by the main dealer to deal with the emissions issue. I have read the reports on your site of post-"fix" problems and I wonder...

Will an air con specialist repair a compressor clutch?

You say in your Telegraph column that air con specialists will repair a compressor clutch; however, I can't find one on the south coast that will do this. Instead, they will only replace the compressor....

How can I remove windscreen scratches?

I've noticed recently that, on my Audi A3, there's a scratch on the interior of the windscreen. It is fairly deep, what can be done to get rid of it? Or at least try and lessen the damage?

Do I need to change the water pump on my Volvo XC70?

My 2005 Volvo XC70 last had a cam belt in May 2013. The water pump was not replaced then for some reason. It has since done a further 30,000 miles. Can you advise when the cam belt should be replaced again,...