Should I dry-sump my Porsche Cayman before using it on track days?

I recently purchased a Porsche Cayman 3.4s and managed to insure it to include five track days. However I was chatting to a friend with considerable motor racing experience, and he advised against taking...

I fitted factory spec wheels with winter tyres to my Honda Jazz and incurred a 'modification' penalty on my insurance. Is this necessary?

I recently changed the 16-inch alloy wheels and tyres on my Honda Jazz and fitted 15-inch steel wheels with cold weather tyres (the only size of winter tyres available for the Jazz). The 15-inch replacements,...

Has my remap caused problems?

I have a 2006 Mercedes-Benz CLS 320 diesel which I had mapped 4 months ago to improve fuel consumption. Recently my turbo failed and I booked it into MB Edinburgh. Having examined the car they stated...

Tuning my Audi A4

I have a 2004 Audi 130bhp TDi Avant with 140k miles on the clock which I have owned since 50k. I recently purchased a 'TDI Tuning Box' primarily for the increase in MPG, which I have noticed a difference...

Should our local boy racer declare his loud exhaust to his insurance company?

You recently published a letter where an insurance company had treated the fitting of cold weather tyres as modification that they should have been told of. Where I live we are plagued by a hoody boy racer...

Is it legal to remove the DPF from a diesel car?

I've seen adverts for companies that can disconnect the diesel particulate filter from the car's ECU. Is this legal and does it make the car better? I think you said only in the last couple of years DPF...

What should I pay for this Alfa Giulietta with extras?

Can you give me a view as to what I should pay for an ex-demo Alfa Guilietta 140JTDM diesel Veloce, 61 reg with the following spec and around 4000 miles? It has special paint (£490), double electric sunroof...

Volvo XC90 Polestar upgrade - worth it?

I have a Volvo XC90 D5, Model Year 2010 (PS185), which is just 2 years old and about to have a service. I'm really pleased with it, but one drawback is that it's a heavy car and feels a bit underpowered...

Can you recommend a classic car for a 17-year-old driver?

I am just about to come into my final year before my GCSEs, after which I will be entering VI Form and hopefully be learning how to drive as I am September-born. I live about 25 miles away from the school...

K&N air filter

I'm thinking of fitting a K&N air filter to my Toyota Auris 1.6 petrol manual 2008. Would it improve performance, affect fuel economy, or affect my insurance?