As an alternative to the big gas-guzzling V6 engines that debuted with the Q50, they’ve gone and sourced Mercedes-Benz’s M274 2.0 litre petrol engine for the four-cylinder Q50. Benefits include cheaper road tax, abundance of torque, and potential fuel savings.
This engine will be mated to a Mercedes-Benz 7G-TRONIC PLUS 7-speed automatic gearbox, which sends power to the rear wheels. The engine has a compression ratio of 9.8:1, and will have direct injection with piezo injectors to complement the turbocharger. In Infiniti’s tune, the 1,991 cc four cylinder engine codenamed M274 will do 214 PS at 5,500 rpm and 320 Nm of torque from as low as 1,250 rpm up to 3,500 rpm.
Curiously, power is actually a few PS higher than Mercedes-Benz’s “250” tune, but torque is lower at 320 Nm versus the equivalent Mercedes-Benz C 250’s 350 Nm. This might be deliberate to put some distance between the torque figures of the 2.0 litre Q50 versus the 3.7 litre V6 version that only has 365 Nm.