BMW unveiled the new 5-Series and ... is either a mild- or plug-in hybrid setup. The 520d and 530e are also available with either rear or all-wheel drive, while the 540d comes standard with ...

There’s a risk though that slotting in a humble four-cylinder diesel engine, such as you’ll find in the 520d, can undo all that good work, particularly when fewer of the new Five’s advanced ...