2018 BMW M550i
Not the Max M: M Performance models slide between the M Sport packages available on models such as the 340i and 540i and all-out M cars like the M3 and M5. This portfolio of vehicles began in 2012 and now includes seven models in the U.S. market, from the M240i coupe to the M760i. With the all-new M5 still a year away, this is as hot as the new 5-series gets right now—and it’s already on sale. Base price is $73,095, which makes it a performance bargain in the hot-rod luxury-sedan class. The Mercedes-AMG E63 and the Audi RS7 are far more powerful and also use all-wheel drive, but both wear six-figure prices. The all-wheel-drive Mercedes-AMG E43 costs about the same as this M550i, but its twin-turbocharged V-6 is weak by comparison. This is also the only V-8–powered 5-series sedan currently available. Under the hood is basically the same aluminum-block V-8 that powered the previous-generation F10 550i. Like that engine, the M550i’s has two twin-scroll turbochargers, direct injection, Valvetronic variable intake-valve lift, and Double VANOS variable intake- and exhaust-timing control. Power, however, has been increased by 11 horses, from 445 horsepower to 456 at 6000 rpm. The peak torque rating, 480 lb-ft at just 1800 rpm, remains the same. That’s 121 horsepower more than you get in the six-cylinder-powered 540i, yet it’s more than 100 ponies shy of the outgoing M5. BMW says it will run from zero to 60 mph in just 3.9 seconds, which is almost a full second quicker than the company claims for the 540i (in which we clocked 4.7 seconds to 60 mph) and a blink better than Munich’s assertion for the departed M5 (our test figure was 3.7 seconds). How’d that happen? Well, traction is up and weight is down.Despite its standard all-wheel-drive system, the M550i is said to be, by Munich’s reckoning, around 100 pounds lighter than the rear-wheel-drive and traction-challenged F10 M5. We’ll have to put it on our scales for a more precise comparison, but also figure in that the M Performance engineers have also equipped this M550i with launch control. The system allows you to rev the engine to 3000 rpm when you perform a brake torque, and it unleashes the fury when your left foot sidesteps the brake pedal. Sixty miles per hour does come up quickly, but it seems likely that the more powerful M5 would eventually plant its tires and sail past the M550i before the quarter-mile is up. At full stomp, the eight-speed clicks off positive and satisfying gearchanges every few seconds, and it keeps the engine revs up and angry where you want them. Use the paddle shifters to downshift, and it matches revs with precision.
2017 BMW M550i
BMW announced details on the European-market M550i, and the numbers paint an impressive picture. Its 4.4.-liter twin-turbo V8 packs a 462-hp punch, providing 0-100 km/h (62 mph) acceleration in 4.0 seconds dead. For reference, BMW says a standard current-generation M5 does 0-100 km/h in 4.4 seconds (an optional Competition Package adds 15 horsepower and shortens the M5’s 0-100 km/h sprint a tad). BMW announced details on the European-market M550i, and the numbers paint an impressive picture. Its 4.4.-liter twin-turbo V8 packs a 462-hp punch, providing 0-100 km/h (62 mph) acceleration in 4.0 seconds dead. For reference, BMW says a standard current-generation M5 does 0-100 km/h in 4.4 seconds (an optional Competition Package adds 15 horsepower and shortens the M5’s 0-100 km/h sprint a tad). BMW also announced a plug-in hybrid variant of the 5-Series, the complexly-named 530e iPerformance. Using a combination of an electric motor and a four-cylinder gas engine, the 530e offers 252 total system horsepower, and an impressive 310 lb-ft of torque.
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