For the 2011 model year, Ford will replace the current 210hp four-litre V6 in the Mustang sports coupe and convertible line with a new, 305hp, all-aluminium 'Duratec' 3.7-litre DOHC V6 with so-called Twin Independent Variable Camshaft Timing (Ti-VCT) that, it said, will return "an expected best-in-class 30mpg highway" fuel economy combined with six-speed automatic transmission. A new six-speed manual gearbox will also be offered.