The car uses modified Maserati platform and powertrain (Maserati Quattroporte, GranTurismo) and also features a Ferrari/Maserati derived 90° cross-plane dry-sump lubricated 4.7-litre V8 assembled by Ferrari. The top engine performance figures may be summarized as a maximum power of 331 kilowatts (450 PS) at 7000 rpm, a peak torque of 480 newton metres (354 lbf·ft) at 4750 rpm (80% at 2500 rpm) with an engine redline of 7500 rpm and rev limiter of 7600 rpm.
The six–speed transaxle gearbox has computerized gear selection by means of levers behind the steering wheel and may be used in Manual-Normal; Manual-Sport; Automatic-Normal; Automatic-Sport and Ice modes. The gearbox can shift in 175 milliseconds when using Sport mode. The 8C has also a limited slip differential.
It is fitted with specially developed 20 inch tyres: 245/35 at the front and 285/35 at the rear, fitted on perforated rims in fluid moulded aluminium. The 8C brakes has been called phenomenal by Road & Track magazine, stopping distance being from 60-0 mph (97-0 km/h) 105 feet (32 m). The official top speed is announced to be 292 km/h (181 mph) but it might be higher around 190 mph (306 km/h) according to the Road & Track magazine. Alfa Romeo engineer says also its faster.