The BMW 640 is the ideal blend of comfort and lively performance. It’s best known for its smooth, powerful engines and refined cabin – perfect for drivers who want to combine style and substance.
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Overall rating 4.5/5
Running costs
Comfort
Reliability
Space Practicality
BMW’s 640 badge is found across several 6 Series models – including the sharp-looking coupe, roomy Gran Coupe and practical Gran Turismo. Drivers often choose the 640 for its strong straight-six engines and impressive long-distance comfort. The 6 Series in this generation launched in 2011, with coupes and convertibles available up to 2018. The 6 Series Gran Turismo (GT), including the 640i, ran from 2017 to 2020. The 640’s blend of high-end finish, relaxed cruising and swift progress earns it a spot alongside rivals like the Mercedes CLS and Audi A7. Inside, the 640 is crafted for comfort, with high-quality materials and space for adults front and back. The coupe offers impressive boot space for its class, while the GT model boasts even greater practicality and a versatile cabin. Today, the 640 is defined by effortless power, a top-notch driving experience and a dash of BMW flair.
Powerful, smooth enginesHigh-quality interior and techStrong long-distance comfort
Running costs can be highRear seat space in coupe is tightLarge size can feel unwieldyBMW 640 models come well-equipped for safety. Most examples include multiple airbags, traction and stability control, automatic emergency braking, adaptive headlights and strong crash structures. Higher-spec cars may have advanced features like lane assist and radar cruise control for extra reassurance.
The BMW 640 is most commonly found with a six-cylinder engine – either petrol (640i) or diesel (640d). Earlier models (2011–2018 coupe/Gran Coupe) use a 3.0-litre turbocharged engine, while Gran Turismo models (2017–2020) offer similar power plants with the latest emissions controls.
All BMW 640s get the intuitive iDrive infotainment system, usually with a large touchscreen and rotary controller. Sat-nav, Bluetooth, DAB radio and high-quality sound are standard. Many cars include leather upholstery, heated seats, climate control and adaptive LED lights, adding to the comfort and convenience.
Diesel 640d models are notably efficient for their size, with official figures topping 55mpg. Petrol 640i versions offer a bit less – generally 35-37mpg. The Gran Turismo models are similar, though real-world figures vary with driving style.
Look for a full BMW service history, especially for oil changes and any recalls. Diesel models need regular DPF/AdBlue attention. Electricals and infotainment screens should work smoothly. For extra peace of mind, consider a check with The AA Vehicle Inspection.
The BMW 640 is generally reliable, especially with proper maintenance. Engines are robust, though diesel models benefit from regular motorway use to avoid DPF issues. Electronic systems are complex, so confirm everything works as expected on a test drive.
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