BMW M6 Review: The Ultimate Grand Touring Performance Car

There is a very specific kind of driver who wants a car that can devour a mountain road in the morning and arrive at a five-star hotel that evening without a single apology for what happened on the way. The BMW M6 was built for exactly that person, and across two celebrated generations it has delivered on that promise more convincingly than almost any rival has managed.

Part luxury grand tourer, part genuine performance machine, the M6 sits at a fascinating point in BMW’s lineup where the engineering ambition of the M division meets the comfort expectations of the 6 Series. The result is one of the most capable and satisfying performance cars the brand has ever produced.

Long, Low, and Unmistakably Purposeful: The M6 Exterior

The BMW M6’s visual identity begins with the 6 Series coupe foundation and layers M-specific modifications that sharpen and lower the car’s overall impression without disturbing the elegant proportions underneath. The wide kidney grilles, the bonnet power dome, the enlarged air intakes in the front bumper, and the subtle but effective aerodynamic additions front and rear mark the M6 out from the standard 6 Series with confidence rather than aggression.

The second generation F13 M6, which ran from 2012 onward, refined this formula with a slightly more contemporary interpretation of the same basic design language. The wider front track is visually expressed through the front bumper’s increased width, and the quad exhaust outlets at the rear make the performance credentials explicit without needing to shout.

Carboon fibre roof options reduce unsprung mass and lower the centre of gravity while adding a visual signature that distinguishes Competition and higher specification variants. The overall silhouette, with its long bonnet, low roofline, and fastback coupe profile, remains one of BMW’s most resolved designs across both generations of M6 production.

Inside the Cabin: Where Grand Touring Meets M Division Precision

Step inside the M6 and the cabin does something that the exterior prepares you for intellectually but still delivers as a pleasant surprise: it is genuinely luxurious. Merino leather across the M Sport seats, carbon fibre trim on higher specification variants, an alcantara headliner that reduces interior reflections at night, and material quality throughout that matches dedicated luxury brand competitors rather than merely approaching them.

The M Sport seats deserve specific mention. They provide lateral support through serious cornering while remaining genuinely comfortable across long motorway distances, which is a combination that performance car seat designers struggle to achieve and the M6’s seats handle with apparent ease. The driver’s seat adjustment range is extensive enough to accommodate a wide range of driver sizes in a proper position.

The iDrive infotainment system in the second generation M6 was the best version available at the time of production, handling navigation, entertainment, and vehicle configuration through a rotary controller and display combination that remains intuitive even by current standards. M-specific additions to the infotainment interface include configurable drive mode settings, M Drive memory buttons on the steering wheel, and performance monitoring displays.

Rear seating in the coupe body is a genuine four-seat configuration rather than the occasional-use arrangement that some performance coupes offer reluctantly. Adult passengers fit in the rear with adequate headroom under the fastback roofline and genuinely usable legroom. The M6 can be a daily driver for a family of four without the rear passengers extracting significant compromise from the vehicle’s performance credentials.

The S63 V8: A High-Revving Twin-Turbo That Refuses to Choose Between Power and Character

The heart of the second generation BMW M6 is the S63 twin-turbocharged 4.4-litre V8, producing 560 horsepower in standard specification and 600 horsepower in Competition trim. This engine is one of the finest performance units BMW has produced, combining the immediate throttle response of modern twin-scroll turbocharging with a high-revving character that naturally aspirated V8 advocates specifically value.

Press the throttle from a rolling start and the S63 loads up with a combination of instant torque from the electric turbines and a climbing power delivery that carries through to a 7,200 rpm redline with undiminished enthusiasm. The exhaust note is deliberately tuned to communicate the engine’s state through the cabin and the tailpipes simultaneously, with the optional M Performance exhaust amplifying both the external drama and the internal soundtrack.

The seven-speed M double-clutch transmission manages gear selection in automatic mode with a speed and intelligence that makes manual intervention feel optional rather than necessary in everyday driving. Select manual mode via the paddles and response is immediate, with the transmission’s willingness to hold gears under braking providing the sequential control that track-day drivers specifically appreciate.

Zero to 100 km/h arrives in 4.2 seconds in standard specification and 4.0 seconds in Competition form, figures that place the M6 in genuine supercar company for outright acceleration while its GT credentials distinguish it from pure performance cars that sacrifice everything else for speed.

Handling is the M6’s second great achievement. The M-developed adaptive suspension adjusts damping rates individually at each corner in real time, allowing the car to absorb motorway expansion joints in comfort mode while transforming into a composed, flat-cornering performance machine in Sport Plus. The transition between these states is rapid and convincing, making the M6’s split personality feel integrated rather than schizophrenic.

Fuel Economy: A Grand Tourer’s Honest Accounting

A 4.4-litre twin-turbocharged V8 in a 1,900-kilogram grand touring coupe returns official combined figures of approximately 10 to 11 litres per 100km, with real-world driving in mixed conditions typically landing between 13 and 16 litres per 100km depending on how enthusiastically the performance is explored.

The auto start-stop system contributes meaningfully to urban economy, and the eight-cylinder deactivation system, which cuts four cylinders during light load cruising, reduces motorway consumption compared to the engine operating on all eight cylinders continuously. These systems work unobtrusively in the background, contributing efficiency gains without demanding driver attention or creating any perceptible change in refinement.

For a vehicle of the M6’s performance capability and size, the fuel economy represents a reasonable balance between the engineering priorities that produced it. Buyers approaching the M6 as a weekend car with occasional long-distance touring use will find the running costs entirely manageable. Daily commuter use at higher annual mileage shifts the financial calculation more noticeably.

Safety and Technology: Comprehensive Coverage for a Performance GT

The BMW M6’s safety and driver-assistance package reflects the technology available during its production run, which for the second generation spans from 2012 through to the nameplate’s discontinuation in 2018. Active cruise control, lane departure warning, front collision warning, and park assist were all available across the range.

The Dynamic Stability Control system has M-specific tuning that allows more driver involvement before intervention than standard DSC calibrations, providing the latitude that skilled drivers use on track days without compromising the protection that less experienced drivers require. MDynamic mode reduces DSC intervention further for those who want to explore the rear-wheel-drive chassis’s full dynamic range in a controlled environment.

Blind-spot monitoring, surround view cameras, and night vision were available as options on higher specification variants, reflecting the M6’s grand touring character and the expectation that buyers would option comprehensively from the extensive BMW options list.

Car and Driver’s comprehensive BMW M6 testing archive provides independently verified performance data and detailed assessment across multiple model years and specifications, offering a thorough reference point for buyers comparing specific variants or model year differences in the M6 range.

M6 Variants and What Each Delivers

The M6 range encompasses several distinct body styles and a meaningful performance upgrade in Competition specification that buyers should understand clearly before making acquisition decisions.

The M6 Coupe is the purest expression of the nameplate’s character, with the lightest weight, the sharpest handling dynamics, and the most visually resolved exterior of the three body styles. It is the choice for buyers who prioritize the driving experience above all other considerations.

The M6 Convertible sacrifices approximately 100 kilograms of weight advantage and a degree of structural rigidity compared to the coupe in exchange for open-air driving capability that transforms the car’s character on appropriate days and roads. The folding metal roof closes the car completely when required, and the convertible’s styling is arguably even more elegant than the coupe with the roof down.

The M6 Gran Coupe adds two doors and a longer wheelbase for improved rear passenger accommodation and a more practical daily car proposition. It sacrifices some of the coupe’s visual drama for genuine four-door versatility, and the slightly increased weight is managed by the same S63 powertrain without meaningful degradation in real-world performance.

Competition specification adds 40 horsepower to reach 600 total, recalibrates the suspension for sharper responses, revises the exhaust for an enhanced sound signature, and adds Competition-specific visual details. For buyers who want the maximum performance the M6 platform offers, Competition specification is the clear recommendation.

Pricing in the current pre-owned market for well-maintained second generation M6s ranges from approximately $45,000 to $70,000 USD depending on specification, mileage, condition, and variant. Competition specification commands a meaningful premium over standard cars. Convertible and Gran Coupe variants have their own distinct market positioning. All represent exceptional value against the original sticker prices, which ranged from approximately $112,000 to $135,000 when new.

Pros and Cons: What the BMW M6 Delivers and Where It Asks for Compromise

Where the M6 genuinely excels:

• S63 twin-turbocharged V8 combines turbocharged torque with a high-revving character that other forced-induction V8s rarely achieve
• Interior quality and material selection match dedicated luxury brand competitors convincingly
• Adaptive suspension genuinely delivers both comfort and performance without compromise between modes
• Four genuine seats make it a practical proposition for small families without rear passenger suffering
• Current pre-owned values represent compelling performance per pound or dollar against new market alternatives
• M double-clutch transmission is among the best in the segment for response and daily use intelligence
• Strong BMW M heritage and collector interest in well-preserved examples is growing steadily

Where honest expectations are required:

• The M6 nameplate was discontinued in 2018, meaning buyers are entering the pre-owned market with all associated considerations
• High-mileage examples require careful inspection of the S63 engine’s known maintenance requirements
• The comprehensive options list means specification comparisons between examples require careful examination
• Insurance costs reflect the vehicle’s performance potential and replacement part costs
• Fuel consumption at higher annual mileage is a meaningful running cost consideration

How the M6 Compares to Its Closest Rivals

The Mercedes-AMG GT 63 S four-door and the Porsche Panamera Turbo represent the most direct comparisons in the performance grand touring segment. The Panamera offers perhaps the most driver-focused experience of the three, while the AMG GT 63 delivers a more dramatic, emotionally intense character. The M6 sits between them, combining the AMG’s exhaust theatre with more of the Panamera’s balance and driver communication.

The Aston Martin DB9 and DB11 represent the British alternative at a similar price point in the pre-owned market, trading the German engineering precision for a more romantically constructed performance experience. The M6 responds with more advanced technology, stronger reliability data, and a more comprehensive dealer support network in most markets.

Within BMW’s own family of exceptional performance vehicles, the M6 occupies a specific position between the more track-focused character of smaller M cars and the effortless long-distance ability of the M8 Gran Coupe that eventually succeeded it. For collectors and enthusiasts exploring BMW’s broader performance heritage, the context provided by both the timeless BMW Z8 roadster and the founding M1 E26 shows how the M6’s grand touring philosophy connects to BMW’s longest performance traditions.

Who Should Buy a BMW M6?

The M6 suits a buyer who has thought carefully about what they actually want from a performance car and arrived at an honest answer: a vehicle that is genuinely fast, genuinely comfortable on long distances, genuinely usable as a daily driver, and genuinely impressive in every environment it is asked to perform in.

The coupe is the right choice for drivers who prioritize the driving experience and whose rear passenger use is occasional rather than frequent. The Gran Coupe suits buyers who regularly carry four adults and need the additional rear door practicality without sacrificing the performance credentials. The convertible suits those for whom open-air driving represents a significant proportion of the car’s appeal.

Competition specification is worth the search and the price premium for buyers who want the maximum performance the platform offers and who will use that capability on appropriate roads or occasional track days. Standard specification suits buyers for whom the performance is already more than sufficient and who prioritize the slightly more compliant suspension calibration for mixed road surface use.

Final Verdict: The BMW M6 Is One of the Great All-Rounders

The BMW M6 represents the M division’s answer to a question that no other BMW model addresses in quite the same way: what is the absolute best grand touring car the company can build? Across two generations of production, the M6 has answered that question with a consistency and a conviction that earns genuine respect.

The S63 V8 is exceptional. The interior is genuinely luxurious. The handling is a technical achievement that makes the car’s performance accessible to skilled drivers without excluding less experienced ones. The four-seat practicality makes it a realistic primary vehicle rather than a weekend indulgence.

In the current pre-owned market, the M6 represents one of the strongest value propositions in the performance GT segment. Find a well-documented, properly maintained example, have it inspected by a BMW specialist, and take it on a proper test drive that includes both motorway cruising and a road with real corners. The M6 will make its case on that drive more convincingly than any specification comparison can manage on a page.