In late 1997 (1998 model year) AMG released a new flagship for the C-Class, the C 43 AMG, powered by a 4.3 L V8, which could now achieve 310 PS (228 kW; 306 hp) at 5850 rpm, with a torque of 410 N⋅m (302 lb⋅ft) at 3250 rpm. Unlike the C36, which was in fact a "ready-to-sell" C280 disassembled for tuning at the AMG factory, the C43 was the first AMG car to be completely assembled at the Mercedes factory after the acquisition of AMG by Daimler-Benz in 1998. The C43 AMG can achieve a 0–100 km/h (0–60 mph) time in 5.7 seconds for the saloon version and 5.9 seconds for the estate. The C43 was the first C-Class to be equipped with a Mercedes-Benz V8 engine.
The C43 is powered by a tuned version of the 4.3-liter M113 V8 engine originally found on the W210 E 430 model. After modifications this engine delivers 306 PS (225 kW; 302 hp) at 5,850 rpm, up to 410 N⋅m (302 lb⋅ft) of torque at 3,250 rpm-5,000 rpm (taken at the crank) and up to 241 hp (180 kW) at 6,320 rpm measured at the wheels. According to Mercedes-Benz, the car can reach 155.5 mph (250.3 km/h), with electronic speed limitation and 168 mph (270 km/h) without. Transmission is an AMG-modified version of the five-speed automatic gearbox (722.6) found on 1998–2000 R129 SL 500. Main modifications were made in order to achieve a crisper and better adapted gearbox to higher-rpm upshifts. The braking system has been taken from the W210 E 55 AMG.
The car was manufactured for a little more than two years – from the end of 1997 to the spring of 2000 for a total of 4,200 units 20% of which are estates and 80% saloons, with only 25 C 43 vehicles of the 2000 model year imported to the US.
Used sparingly for European holidays, the C43 has remained in excellent condition with extremely good bodywork, and a very crisp interior. It is probably one of the lowest mileage AC43 AMG’s available having covered only less than 40,000 miles since new, The mileage is supported by the service records covering the maintenance carried out since 1999