The new large Peugeot will come with a range of six engines, including naturally-aspirated and turbocharged versions of the 1.6-litre petrol unit, but it's the four diesels which are of most interest.There's also a two-litre diesel, producing 140bhp with manual transmission or 163bhp if linked to an automatic gearbox, but the most significant unit of them all is the 112bhp 1.6 HDi. Air intakes