TOP TIP

Hybrids might be current thinking but the Hybrid4 508 needs to be driven in a particular way to activate the ZEV ‘electric only’ mode – it usually only kicks in below 30mph on flat road. Various other things can prevent it operating in hybrid mode, too, notably issues with the brake vacuum pump and built-in software which prevents activation of the stop-start and hybrid functions if the auxiliary belt reaches its replacement interval of 60,000 miles. In short, tread with care.