The current (and outgoing) BMW M3 upset quite a few purists when it switched to turbocharging to boost power from a long line of naturally aspirated engines. It looks like the upcoming G80 M3 based on the new G20 3-series is looking to buck the tradition again by being the first ever M3 to offer AWD/4WD. That's right, it looks like the next M3 will send power to all four wheels according to a report by Auto Express. Of course, it won't be the first ever M-car to offer AWD. That honour goes to the current M5 which was the first M sedan/saloon car, so perhaps that should have been a sign of things to come. It makes a lot of sense, given the competition. Fast Audi have been AWD for several generations and recently, AMG announced that the future of AMG is four-wheel drive. Tough Competition Audi is nearly synonymous with AWD and with AMG now switching to AWD, a RWD M3 would (unfortunately) be quite handicapped in terms of traction and objective performance. Competition
A few weeks ago, I made a post explaining mainstream AWD system types and how they compare , pros and cons, etc. including some simple diagrams to show where the power goes and how much. As promised, this post will focus on specific cars and what AWD systems they use, especially ones that that have more or less been defined by their AWD systems, and the best place to start may be with a bombshell; the Nissan GT-R. Nissan GT-R (R35) The GT-R has built a reputation around having monster traction and very approachable performance, thanks to its AWD system - Advanced Total Traction Engineering System for All-Terrain (ATTESA) - and what it can do for you. But the GT-R doesn't actually use the most mechanically sophisticated type of AWD systems discussed in the previous article, namely a "true" AWD with a centre differential. Instead, it uses a clutch pack to transfer power. RWD-based clutch-type AWD schematic - Rams Eye The Track Guy © The R32, R33, and R34 Sky