When the BMW 7 Series was first introduced to the UK there wasn’t a diesel model, but with the diesel powered Mercedes Benz S Class C320 CDi accounting for over 50% of all S Class sales, BMW knew there was a market for a luxury diesel executive saloons and soon introduced their diesel V6 2993 cc engine to the 7 Series line up.

Now all the major executive car producers have a diesel model within their range, from Audi to Jaguar, you will find a diesel option. Diesel engines in executive cars make perfect economic sense, sub 20 mpg is no longer an option with increasing fuel prices, and now that most diesel engines are nearly as refined and as quick, if not quicker than their petrol equivalent it makes perfect driving sense.

The BMW 7 Series is available with a choice of four petrol engines the V6 2996cc (730i), V8 4000cc (740i), V8 4799cc (750i), and V12 5972cc (760i) - plus one diesel engine the V6 2993 cc, fitted to the 730d range.


BMW 730Ld SE.

To ensure its popularity, the 730d engine has been extensively revised and it now benefits from an all-aluminum cylinder block that reduces the weight of the engine by 25kgs. As a result of this weight reduction and BMW's new third-generation common rail diesel technology (that includes piezo-injectors, a faster and more efficient form of injection); power is increased by 12 per cent to 228bhp at 4,000rpm while torque is four per cent higher at 520Nm, developed between 2,000 and 2,750rpm.

The top speed of the BMW 730Ld is an academic 148 mph, with 0-62 mph being achieved in a respectable 7.9 seconds. The 730Ld closest competitor is the Mercedes Benz 320 CDi, which can outpace the BMW with 0-62 mph being reached in 7.5 seconds and a top speed of 155 mph.