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Mercedes AMG GT gets new 503 bhp Twin-Turbo 4.0 litre V8 (video)

The new Mercedes AMG GT (pictured) gets the new 503 bhp Twin-Turbo 4.0 litre V8 We’ve speculated that the new Mercedes AMG GT – and, for that matter, futures ’63′ AMGs – will get a new twin-turbo V8 to provide the power as Mercedes look to move away from the naturally aspirated 6.2 litre V8 in cars like the SLS. And this is it. A new 4.0 litre twin-turbo V8 – the M178 engine – has been developed to replace the 6.2 litre V8 and, in initial tune, develops 503 bhp at 6250 rpm and 479lb/ft of torque from just 1750 rpm.

Geneva Show 2014: High Performance XF Wagon Roars Into Geneva

ORIGINALLY launched as a luxurious but sensible premium estate car, it was always a matter of when not if the stylish XF Sportbrake would receive Jaguar’s famed high performance makeover. The Brit car maker has exceeded expectations, as the newly christened XFR-S Sportbrake packs a considerable 542 horsepower from a supercharged 5.0-litre V8 petrol engine. Tweaks to the regular car’s suspension, steering and transmission help it reach 60mph from rest in a blistering 4.6 seconds and top out at an electronically limited 186mph.

Diesel-powered Audi A3 Sportback TDI coming to America in 2015

The Audi A3 family has another America-bound variant: the automaker announced at the New York auto show that a diesel-powered Audi A3 Sportback TDI will go on sale here in 2015. Previously, we were told that the plug-in hybrid version of the vehicle -- the so-called Audi A3 Sportback e-tron -- would be the only one to make it to American markets. According Audi, it was enthusiast demand that spurred the change.