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2015 BMW M6: New Car Review

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Used 2015 BMW M6 Convertible
Used 2015 BMW M6
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author photo by Autotrader February 2015

If you’re looking for information on a newer BMW M6, we’ve published an updated review: 2018 BMW M6 Review

The 2015 BMW M6 is a test of the new engineering philosophy at BMW's high-performance M division. Previously, M cars had purpose-built, naturally aspirated engines that defined their driving character, but now they come equipped with tweaked versions of engines from other BMW products. In the M6's case, the tweaks are pretty serious: Its 4.4-liter twin-turbo V8 has been massaged to produce 560 horsepower, a whopping 115 hp more than the similar engine in the 650i. But only speed freaks would find the much cheaper 650i's acceleration inadequate.

That's not necessarily a problem, however, because M cars have always been aimed at a fringe enthusiast element. Without a doubt, this audience will enjoy the amazing force generated by the M6's hot-rod V8. The M6's handling is also a clear improvement over that of the 650i in outright capability, though the car's inherent bulkiness still makes this less of a sports car than, for example, the Porsche 911 or even BMW's own M4.

We still have some reservations about the new M philosophy. Whereas the previous V10-powered M6 felt like a completely different beast, the 2015 M6 feels more like a 650i on steroids. Then again, steroids are good when it comes to cars, and we can't really argue with a philosophy that produces a luxury performance car with 560 hp under its hood. This latest M6 is fine by us.

What's New for 2015?

The 2015 M6 picks up a standard Harman Kardon stereo and a touchpad-equipped iDrive controller. See the 2015 BMW M6 models for sale near you

What We Like

Incredible acceleration; capable handling; top-shelf interior; plenty of technology

What We Don't

Cheaper 650i's acceleration was already incredible; feels big in tight corners

How Much?


Fuel Economy

The rear-wheel-drive M6 is powered by a twin-turbocharged 4.4-liter V8 rated at 560 hp and 500 lb-ft of torque. A 7-speed dual-clutch automated manual transmission is standard, though a 6-speed conventional manual is a no-cost option for traditionalists.

According to the Environmental Protection Agency, the M6 returns 14 miles per gallon in the city and 20 mpg on the highway with the automated manual, while the stick shift yields a slightly better 15 mpg city/22 mpg hwy.

Standard Features & Options

The 2015 BMW M6 comes in one well-equipped trim level in either coupe or soft-top convertible form.

The M6 coupe ($112,850) comes standard with a carbon-fiber roof, staggered-width 19-inch alloy wheels, adaptive xenon headlamps, fog lights, adaptive dampers with selectable driving modes, keyless entry/ignition, 20-way multicontour heated sport seats, dual-zone automatic climate control, iPod/USB and Bluetooth connectivity, BMW Apps smartphone integration, a 16-speaker Harman Kardon audio system, and the iDrive infotainment system with a 10.2-in widescreen display, digital music storage, a navigation system and a rearview camera.

The M6 convertible ($120,450) is similarly equipped but substitutes a power soft-top with a heated glass rear window that can be independently raised and lowered.

The Competition package adds a sport exhaust with black chrome tailpipes and enhanced sound, 15 extra horses, and sportier suspension and steering tuning. The Executive package includes LED headlights, ventilated active front seats with massage functions and a head-up display.

Stand-alone options include 20-in wheels, carbon ceramic brakes, a Bang & Olufsen audio system and a night vision system with pedestrian detection.

Under the trunk lid, the M6 coupe offers 13 cu ft. of space, while the convertible manages a respectable 10.6 cu ft. with the top down.


The 2015 BMW M6 comes with stability control, 4-wheel anti-lock disc brakes, active front head restraints and four airbags (front and front-side). Also standard is BMW Assist, which includes 4 years of enhanced roadside assistance, stolen-vehicle recovery and more. The Driver Assistance Plus package throws in a blind spot monitoring system, lane-departure warning, a forward-collision monitor with automatic braking, a driver-drowsiness monitor, speed-limit information, and side- and top-view cameras.

Behind the Wheel

While the M6 borrows heavily from the 7 Series executive sedan under the skin, its cabin is uniquely intimate and sporty. The seats are mounted low, although ingress and egress aren't difficult. The multicontour front seats are outstanding, by the way, with robust lateral and lumbar support complemented by adjustable thigh support and seemingly infinite tilt and recline options. Interior materials are top-quality, and the rakish dashboard is defined by a bold character line that swoops from the passenger door all the way down to the driver's seat.

Sadly, the M6's back seat is useless except as a parcel shelf, which is surprising in such a sizable car. The folks in front could slide their seats forward to accommodate rear passengers, but even then, rear headroom will be limited unless you're in the convertible with the top down. Speaking of which, the vinyl roof operates rapidly and with minimal fuss, but it's naturally not as secure or as versatile as a retractable hardtop.

At full throttle, the M6 is incredibly fast, and its modified V8 has a more authoritative bark than the nearly silent twin-turbo V8 in the 650i. Low-end and midrange torque is so beastly that we're reminded of a turbodiesel, though the blown V8 loses a bit of breath near redline. While it's cool that BMW offers a manual transmission, the automated manual seems better suited to this car (except for its inferior fuel economy), ripping off rev-matched downshifts with the best of them yet remaining quite civilized in normal drive operation.

On the road, the M6 reminds us of another big, heavy, unbelievably capable coupe: the Nissan GT-R. Cars of this size simply shouldn't be able to do what the M6 does in corners, whether it's remaining remarkably free of body roll or getting sideways with the precision of a custom-built drift car. The adjustable steering with three effort levels adds to the sense of driver control, though hardcore BMW fans will likely find this rack lacking in genuine feedback (the Competition package's revised steering aims to fix this). This car can handle practically everything you throw at it, especially if you've specified the optional, indefatigable carbon-ceramic brakes. When you just want to cruise, don't worry, because the M6's adjustable dampers and fundamentally supple suspension provide luxury-grade ride quality.

Other Cars to Consider

2015 BMW M3 -- Whether you're looking at the previous-generation M3 with the high-revving V8 or the new one (now known as the M4 in 2-door form) with the twin-turbo inline 6-cylinder, it's going to be a smaller, lighter and more responsive car than the M6. Plus, the M3/M4 convertibles are of the retractable-hardtop variety.

2015 Chevrolet Corvette Stingray -- If you don't need the vestigial back seat, take a flier on the C7 Corvette. It's tens of thousands of dollars less expensive than the M6, looks cooler, handles better and has a much-improved interior.

2015 Nissan GT-R -- The GT-R has a reputation as a soulless robo-car, but people who spread that rumor clearly haven't driven one. In fact, the GT-R is immensely engaging, and its all-wheel-drive system makes it quicker off the line than the M6.

Used Mercedes-Benz SL65 AMG -- How about a twin-turbo V12? The 2-seat SL65 can be purchased for M6 money on the pre-owned market, though we'd strongly recommend getting the best warranty you can find.

AutoTrader's Advice

There aren't many choices to make here, but we'd definitely check the box for the fade-proof carbon-ceramic brakes, assuming you have an extra $9,000 or so. Find a BMW M6 for sale

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Used 2015 BMW M6 Convertible
Used 2015 BMW M6
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2015 BMW M6: New Car Review - Autotrader