EFFICIENCY

Downsizing creates a virtuous improvement loop, to boost eŽiciency

1. DOWNSIZED

508 Fastback measures 4.75m long: that’s 8cm shorter than the outgoing 508, and it stands 6cm lower. But the wheelbase comes down by only a couple of centimetres, to claim more legroom than in an

Audi A5 Sportback

2. MORE NIMBLE

Being shorter makes the 508 more manoeuvrable, with a 1.5m tighter turning circle than its predecessor. Should be a blessing in European cities’ narrow streets.

3. LIGHTER

Blindingly obvious, but a smaller size equates to less mass. On average, the R8 generation weighs 70kg less than its predecessor. Every gramme saved helps mitigate fuel consumption and CO2

emissions.

4. MORE AERODYNAMIC

It may not look it, but the 508 is narrower at the front than at the rear. A smaller frontal area reduces wind resistance, and tapering the cabin after the passenger cell helps create a more aerodynamic boat-tail.

5. LATEST ENGINES

Peugeot oers three engines: a 1.6-litre turbo petrol, and 1.5- and 2.0-litre diesels. CO2 emissions are bestin-class: the 129bhp diesel automatic emits just 98g/km, while the equivalent entry-level petrol pus out a measly 123g/km on 17-inch rims.

6. AUTO GEARBOXES

A new eight-speed automatic transmission is standard on all engines except the 1.5-litre diesel. Tuned for e”iciency, it also unlocks the potential of the 508’s driver aids, such as fully automated parking and stop-and-go

cruise control.

7. STIFFER

The 508 is the ‘irst Peugeot to bond chassis sections together, as well as weld them. The result is a car more resistant to bending, which helps anchor the suspension and makes for more precise handling.

8. QUIETER

A stier structure also helps keep out noise. The 508’s front subframe, which mounts the suspension, also isolates noise, as does 1mm thicker sideglass.