Used BMW 6 Series Gran Coupe (2012-2018) Guide

The BMW 6 Series Gran Coupe from 2012 to 2018 blends the elegance of a coupe with the utility of four doors, delivering a premium driving experience that punches above its weight in the luxury sedan segment. This model stands out for its potent engine lineup, precise handling, and high-quality cabin, making it a compelling option for used car shoppers today.

Overview of the BMW 6 Series Gran Coupe Lineup

Launched as part of BMW’s third-generation 6 Series family, the Gran Coupe arrived in 2012 as a four-door variant that offered more practicality than the traditional two-door coupe while retaining sporty proportions. Built on the same platform as the 5 Series and 7 Series, it measured around 5 meters in length, providing a commanding road presence with its long hood, sloping roofline, and aggressive stance. Production ran until 2018, after which it was phased out in favor of newer models like the 8 Series Gran Coupe.

Available in multiple trims including SE, M Sport, and high-performance M6 variants, the Gran Coupe catered to buyers seeking refinement or outright speed. Key updates came in 2016 with refreshed styling, improved infotainment featuring a larger 10.2-inch screen, and enhanced connectivity options like wireless charging. Despite its premium aspirations, sales were modest due to high initial pricing, which started over £60,000 for base models, positioning it against rivals like the Mercedes CLS and Porsche Panamera.

Engine Options and Performance Breakdown

Every engine in the 6 Series Gran Coupe lineup delivered impressive power, ensuring brisk acceleration and effortless highway cruising. Petrol choices included the 640i with a 3.0-liter turbocharged inline-six producing 320hp, achieving 0-62mph in about 5.4 seconds. The range-topping 650i upped the ante to 450hp for even quicker sprints, while the M6 packed a twin-turbo V8 with over 550hp, rivaling supercars in straight-line speed.

Diesel fans had the excellent 640d, a 3.0-liter unit with 313hp and 465lb ft of torque, blending strong performance (0-62mph in 5.2 seconds) with efficiency around 50mpg on motorways. This diesel proved the most popular, praised for its refinement and low running costs. All models came with an eight-speed automatic transmission as standard, offering smooth shifts and paddle-shift control for engaging drives.

Note: Figures are approximate combined cycle based on manufacturer data and real-world tests.

Driving Dynamics and Handling Excellence

Behind the wheel, the Gran Coupe shines with BMW’s signature balance of sportiness and grand touring comfort. The chassis delivers sharp steering feedback, minimal body roll, and composed cornering, even on standard suspension. Adaptive dampers on higher trims allow switching between comfort for long journeys and firmness for twisty roads. Owners frequently highlight its effortless power delivery, making overtakes stress-free and the overall drive engaging yet refined.

Compared to competitors, it outperformed the Porsche Panamera in some tests for driver involvement and bested the Audi RS7 in straight-line prowess during head-to-head comparisons. The 640d, in particular, offers the sweet spot: ample torque for relaxed cruising and enough poise to thrill on back roads, all without excessive fuel thirst.

Interior Comfort and Practicality Features

Step inside, and the cabin exudes luxury with supple leather, real wood or aluminum trims, and a driver-centric layout. Front seats are among the best in class, providing excellent support for long hauls, with heating, ventilation, and massage functions on loaded examples. The 10.2-inch iDrive screen post-2016 update brings intuitive navigation, smartphone integration, and a cleaner interface.

• Seating: Proper four-seater with ample legroom and headroom for adults in the back two positions; center spot suits children due to console intrusion.
• Boot Space: 460 liters with seats up, expanding to 1,265 liters folded; 60/40 split-folding rears and ski hatch enhance versatility.
• Tech Highlights: Ambient lighting, Harman Kardon audio, head-up display, and parking aids as options.

Rear space is generous for a coupe-like design, making it more family-friendly than two-door siblings. Build quality impresses, with solid door thuds and durable materials that hold up well in used examples.

Reliability, Maintenance, and Ownership Costs

BMW’s condition-based servicing adapts intervals up to 20,000 miles or two years, with diesels often reaching 16,000 miles between visits. Typical costs: £200 for oil service, up to £450 for full filters. Post-three-years fixed-price plans reduce these to £130-£380. Common issues include turbo wear on high-mileage diesels, electronics glitches, and suspension bushes, but overall reliability is solid for a luxury car, especially the 640d.

Owner feedback is overwhelmingly positive, with perfect scores for driving fun, comfort, and economy. Fuel efficiency shines in the diesel, often exceeding 45mpg in mixed use, keeping tax and insurance reasonable. Resale values hold decently due to rarity, with clean 640d models available under £20,000 today.

Trims, Specs, and Buying Advice

Entry-level SE focused on luxury, while M Sport added aggressive styling, bigger wheels, and sport seats. Avoid early models without the 2016 facelift for better tech. Prioritize full service history, check for swirl flaps in diesels, and inspect adaptive suspension. The 640d M Sport auto is the recommended pick for balancing performance, costs, and availability.

• Budget £15,000-£25,000 for low-mileage examples.
• Inspect: Timing chain, injectors, and DPF health on diesels.
• Pros: Thrilling drive, spacious, efficient diesel.
• Cons: High original price led to rarity, firm ride unladen.

Market Comparison and Value Today

In today’s used market, the Gran Coupe offers better value than new 8 Series equivalents, undercutting Mercedes E-Class Coupes while matching their dynamism. It’s rarer than 5 Series, adding exclusivity. Videos and reviews confirm it’s a hidden gem under £20k, with dynamics rivaling pricier sports sedans.

Frequently Asked Questions (FAQs)

Is the BMW 640d reliable?

Yes, with proper maintenance; common fixes are manageable, and owners report high satisfaction.

What’s the fuel economy like?

640d achieves 45-52mpg combined, making it frugal for its power.

How practical is the boot?

460-1,265 liters, plus folding seats for versatility.

Best model to buy?

640d M Sport for performance, economy, and features.

Any common problems?

Watch for diesel emissions systems and electronics; service history is key.