2011 BMW 640i Convertible Automatic

Highlights

• Open top grand tourer
• Turbocharged N55 straight-six
• Automatic gearbox
• Good recent service history
• Lovely condition

Overview

Among BMW's grand touring lineage, the F12 6 Series Convertible occupies a particularly compelling position. Launched in 2011, it married elegant, sweeping bodywork with a beautifully appointed cabin, potent engines and a folding soft-top roof that could transform any journey into an occasion. Composed and stable at motorway speeds, refined enough for continent-spanning trips, and blessed with the kind of kerb appeal that only seems to intensify with age, it remains one of the most complete open-air grand tourers of its era. The interior, all leather and well-damped switchgear, has a quality of finish that holds up against rivals costing considerably more, and the boot is genuinely usable, even with the roof stowed.

While the 640d diesel found favour with many buyers for its impressive fuel economy and generous low-rev torque, the 640i tells a rather different story – and, for a PistonHeads audience, arguably a more interesting one. Under that long bonnet sits BMW's acclaimed 3.0-litre turbocharged inline-six – the N55 – producing 320 bhp and 332 lb ft of torque, all fed through a beautifully calibrated ZF eight-speed automatic gearbox. It's an engine that rewards engagement, delivering smooth, linear power with an unmistakably creamy straight-six voice note. In a closed-roof coupe, that soundtrack is a pleasant companion. In a convertible with the roof folded away, even more so.

And that brings us to this particular car: a 2011 BMW 640i Convertible that's been in its current owner's hands for over two years but an expanding family is forcing a more practical choice. Sitting on 20-inch BMW alloy wheels, it looks great and, although it bears some honest patina, it’s very presentable. The vendor reports that the electrically operated soft-top functions as intended, the heated front seats warm, the heated steering wheel heats, and the navigation system navigates. In all, it’s ready to go and while the roof and heated cabin elements will keep you snug in the winter, the sunshine which must surely be round the corner (please!) will look even more appealing when you can cruise around with the roof down.

History and documentation

• First registered 23 September 2011
• In current ownership for over two years; five previous keepers
• The vendor reports a recent service history predominantly from a main BMW dealer, with the most recent service, a major service including transmission fluid change was completed in August 2025
• The service book detailing servicing prior to 2019 has unfortunately gone astray
• The owner's manual, collection of old invoices and previous MOT certificates accompany the car
• The private BMW number plate is included in the sale
• Two keys are included
• MOT to 17 Aug 2026
• ULEZ compliant

Interior

• Black leather heated seats and heated steering wheel
• Presents with normal wear and tear consistent with the car’s age and mileage
• The vendor notes some scratches to the interior trim pieces and the infotainment screen
• Dashboard, gauges and switchgear reportedly all in working order
• Boot space is clean and tidy; usable even with the soft-top stowed
• A well-specified and comfortable GT cabin

Exterior

• Sits on 20-inch BMW alloy wheels
• The vendor tells us the car is in generally good condition, including the convertible soft-top
• Scuffs are reported on the lower front bumper along with stone chips to the bonnet – consistent with regular road use
• The vendor reports a small dent on the driver's door
• The vendor states that all body panels align properly and all exterior trim is present
• Convertible roof top reported to be in good overall condition

Mechanical

• 3.0-litre turbocharged N55 inline-six producing 320 bhp and 332 lb ft of torque
• ZF eight-speed automatic gearbox
• Rear-wheel drive
• 0-62 mph in 5.5 seconds
• 155 mph top speed (electronically limited)
• August 2025 service included transmission fluid change and a new battery
• The vendor reports the car starts without hesitation, drives as expected and produces no abnormal noises

Summary

The 6 Series Convertible has always made a compelling case and seems in our eyes to be improving with age. The 640i delivers a rich soundtrack and enough shove to be a faithful continent-crossing companion.

This one is in very usable condition, with a recent big service, and is all you need for the summer sun which we’re all hoping for!

To arrange a viewing, click the 'Book Viewing' button located under the 'Place Bid' button. Viewings can be booked up until the day before the auction ends, after which the option will change to 'Contact Seller' for further enquiries. This seller is located in Rugby.