TOP Most powerful six-cylinder engines

1NISSAN GT-R NISMO

441kW Torquey and powerful 3.8-litre twin-turbo V6 defines Nissan’s explosive GT-R, made even better with the recent arrival of flagship Nismo model, which ups power from 419kW in regular models.

2PORSCHE 911 TURBO S

427kW One of the few petrol engines with variablegeometry turbochargers, the 911 Turbo muscles up early with prodigious torque before unleashing its ferocious power peak high in the rev range.

3ALFA GIULIA QV

375kW ‘Ferrari inspired’ 2.9-litre lump ramps up its torque delivery as you ascend through the gears to deliver potent performance. Can also shut down a bank under part load to save fuel.

4BMW M4 GTS

368kW More highly strung GTS wrings a heady 368kW out of BMW’s smooth inline six. Even the 331kW from the Competition models or 317kW from the regular M3/M4 make for good – and quick – times.

PORSCHE 911 CARRERA GTS

331kW Now the shrieking 368kW GT3 RS has disappeared it’s the muscular 331kW GTS that powers onto this list. Bigger turbos bring more muscle than a regular Carrera S.