Which luxury car is the wisest financial decision - Ferrari, Bentley or Aston Martin?

In early 2013, I bought a new BMW 640d M Sport Gran Coupe. I part exchanged it two years later for a new BMW M4. That cost me £32,000 in depreciation. I'm now thinking of selling my M4 at the three year...

Should I haggle when buying a sports car such as an Aston Martin DB9 or Ferrari California?

Having read the interview in last weekend's Daily Telegraph I was surprised to read you have already spent 18 years offering your services to readers of the Daily Telegraph, and I hope you will continue...