Pace Relations: If you want a seriously fast 3-series, which should you go for - petrol or diesel?

摘要

Rare are the occasions in life on which just one solution fits all, even when it comes to BMWs that have four doors and five seats and which can fire you at the horizon with broadly the same conviction as a bullet that has just appeared out of a gun. Because for every fast factory BMW, there is inevitably an alternative available from Alpina. And in this case the alternative is genuinely quite some weapon. So we posed one very simple question to which the answer is anything but straightforward. In a fast BMW 3-series - a very fast BMW 3-series - which is the best form of engine to have thumping away beneath the bonnet: petrol or diesel?