BMW 3-litre diesel Three-Series gets a new engine
Electronic rather than mechanical upgrades are at the heart of the 3-series facelift, but there’s one engine that has been subjected to a good going-over – the 3-litre diesel.
The straight-six unit retains the same swept volume, but the iron block has given way to all-aluminium construction (saving 5kg overall), and the latest, third-generation common-rail system has been adopted. These, together with myriad minor alterations, have boosted power and torque by 13bhp and 15lb ft respectively, while stretching 49.6 miles from a gallon of fuel.
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