With a fuel consumption of 7.2 litres/100km - 39 mpg UK - 33 mpg US (Average), 0 to 100 km/h (62mph) in 6.5 seconds, a maximum top speed of 147 mph (236 km/h), a curb weight of 3825 lbs (1735 kgs), the X253 GLC 300 4MATIC has a turbocharged Inline 4 cylinder engine, Petrol motor.