At the tail end of the 911 GT3 is a familiar naturally aspirated 4.0-liter flat-six that makes 502 horsepower. The engine is essentially identical to the one that powered the last 911 Speedster we tested, which spun to 9000 rpm and sung a hypnotic tune. The new GT3 offers both a seven-speed dual-clutch automatic (a.k.a. PDK) or a six-speed manual.
The Mercedes GT R is a high-performance variant of the Mercedes-AMG GT and was introduced at the Goodwood Festival of Speed on 24 June 2016. The M178 engine in this variant is tuned to an output of 577 hp at 6,250 rpm and (516 lb⋅ft) of torque at 5,500 rpm. The GT R accelerates from 0 to 100 km/h (62 mph) in 3.6 seconds and has a claimed top speed of 198 mph.
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