Мотор R6, две турбины, обороты до 7500. Сути это тот же N54 (Е9х 335i), только с Valvetronic от N55. Магии М-моторов больше нет. А вот вес ниже 1500кг - Вкусняшки от маркетологов - в опциях керамические тормоза) ENGINE Inline 6 cylinder engine with two mono-scroll turbochargers Direct Injection VALVETRONIC Double-VANOS closed-decked crankcase twin-wire arc-spray coating (instead of liners) in cylinder bores reduce engine weight 430 HP (approximately) 369+ LB-FT (500 Nm) See Dyno Chart Higher than 7500 RPM redline TURBOS Two mono-scroll turbochargers Impulse charging for optimized responsiveness Flow-enhanced manifolds Electric wastegate actuator COOLING Double-flow oil recirculation pumps Turbocharger suction system Main radiator plus additional radiators for the high- and low-temperature circuits, turbocharger and transmission, Large indirect intercooler Low-weight magnesium oil sump Temperature-stabilizing electric water pump WEIGHT Under 3,306 lb (1500kg) weight no mention if this is curb weight and no specifics provided as to what equipment included/not included in figure but, it is mentioned that "the new model is now around 80 kilograms lighter than a comparably equipped predecessor model" [80kg = 176 lbs and the E92 M3 was 3,704 unladen on the BMW US website] compare to E46 M3 at ~3,400 lb curb weight compare to E92 M3 at ~3,600 lb curb weight compare to C63 AMG at ~3,900 lb curb weight compare to RS5 at ~4,000 lb curb weight ~ 7.68 lb/hp power to weight compare to E92 M3 at 8.7 compare to C63 AMG at 8.7 compare to RS5 at 9.0 compare to E46 M3 at 10.25 Fuel consumption and emissions reduction of 25% CARBON FIBER CONSTRUCTION CFRP drive shaft 40% weight savings over previous M3 increased stiffness reduced rotating mass for better acceleration and throttle response CFRP roof for both M3 and M4 saves 11 pounds (5kg) on M3 saves more than 13.2 pounds (6kg) on M4 CFRP roof bow Carbon fiber trunk for M4 (11 pounds (5kg) weight savings) CFRP front strut brace standard (weighs just 3.3 pounds (1.5 kg)) TRANSMISSION Standard 6 speed manual transmission automatic throttle blips on downshift more compact and quieter than predecessor E90/E92 M3 6 speed 26.4 pounds (12kg) lighter carbon fiber friction linings in synchroniser rings dry sump lubrication Optional 7 speed M DCT (double clutch transmission) with launch control Active M Differential (with constantly variable locking a la M5/M6) Forged crankshaft STEERING Electric power steering specially tuned for M3/M4 Servotronic function electronically adjusts the level of steering assistance Three modes: Comfort, Sport, Sport+ SUSPENSION / CHASSIS Optional Adaptive M suspension (with Comfort, Sport, Sport+ modes) CFRP front strut brace Double-joint spring strut front axle (saves 11 pounds) New five-link rear axle made from forged aluminum (saves 6.6 pounds) Aluminum suspension Aluminium stiffening plate Rear axle subframe fixed directly to body (bolted joints between the axle subframe and the body sills, without use of elastic rubber elements). WHEELS / BRAKES Lightweight forged wheels standard Staggered tire sizes M compound brakes standard (in blue) M carbon ceramic brakes optional (in gold) EXHAUST Exhaust features electrically controlled flaps just before rear silencer to minimize exhaust back-pressure as well as giving precise feedback on engine load. AERO 50:50 weight distribution Air Curtain M gills with integrated Air Breather behind front wheels MISC M3 and M4 to be introduced together (at Detroit NAIAS 2014 in January). M3 and M4 developed with help of BMW race car drivers Bruno Spengler and Timo Glock's participation in extensive testing and set- up runs on the Nürburgring-Nordschleife circuit, focusing on assessment of the cars’ suspension, tyres and all elements of the powertrain.
На 1М мощность с чипом - 400. Тут добавили Valvetronic еще. А так да. Инфо о новых технологиях или третьей или электротурбине не нашёл)