The A 45 AMG is a performance version of the A-Class, fitted with a 2-litre four-cylinder turbo engine rated at 380 BHP at 6000 rpm and 475 N⋅m (350 lbf⋅ft) at 2250-5000 rpm, AMG Speedshift DCT 7-speed sports transmission with Momentary M mode, 4MATIC all-wheel drive, 3-stage ESP with ESP Curve Dynamic Assist and "ESP Sport Handling" mode, AMG sports suspension with independently developed front and rear axles, high-performance braking system with 350 x 32 millimetres front brake discs and 330 x 22 millimetres rear brake discs, and is identifiable by the "twin blade" radiator grille, AMG light-alloy wheels in twin-spoke design and two square chrome-plated tailpipes.
With 380 BHP, the A45 and its derivation vehicles, CLA45 and GLA45, have the highest specific output per litre of 187.5 horse power per litre for a four-cylinder motor in the passenger car as of September 2017. The Bugatti Chiron has the same specific output as A45.
The vehicle was originally announced to be unveiled in first quarter of 2013, and was later unveiled at the Geneva Motor Show. Sales release date was set to 8 April 2013, with Germany market launch beginning in June 2013.
Offered for sale with both keys, owner book pack, options list with costings and comprehensive service history profile comprising of both Mercedes and independent specialists.