The BMW M340d has always been a little odd since it is a modest M sedan with a diesel engine that is easily surpassed in performance by the M340i. The M340d may now be tuned by the German tuning outfit Manhart to be just as powerful as its petrol sister.
The MH3 400D, as Manhart's invention is known, not only improves the sedan's performance but also gives it more style. Under the hood, the tuner put his or her MHtronik powerbox to increase the vehicle's usual 340 horsepower and 700 Newton meters (516 lb-ft) to a more potent 380 horsepower and 568 lb-ft (770 Nm). For comparison, the M340i has 382 horsepower and 369 lb-ft (500 Nm) of torque.
A redesigned exhaust with four 90 mm tailpipes and movable valves complements the modified engine software.
The design comes next. Silver and red stripes that go down the sides, over the bonnet, and roof of the automobile set it apart from other M340i models. A more aggressive diffuser and a lip spoiler made of carbon fibre from the M Performance line have also been added by Manhart. The vehicle is now supported by H&R springs that have dropped the ride height by 1.57 inches (1.57 cm) at the front axle and 1.18 inches (1.18 cm) at the rear axle.
Naturally, Manhart had to replace them. Their new wheels were matte black, 20" in diameter up front and 20" in back, with 255/30" front and 275/30" rear tires. New carbon fibre shells for the M sports seats, a carbon fibre shift paddle, and lighted Manhart door sills complete Manhart's improvements.