2007 BMW M6 Cabriolet

Finished in Interlagos Blue with a Silverstone Merino leather interior, this BMW M6 Convertible has been in the care of the current keeper since February 2019. The seller is, you see, a long-time BMW fan and this was the only modern classic he hadn’t owned, so when he tired of running cars like the 750iL, CSL and Alpina B7 Turbo as his daily drivers, his thoughts naturally turned to the M6.

And what a cracking example he chose; with just two keepers prior to him, it comes to market with a fulsome service history comprising 12 stamps in the book despite having covered just 44,000 miles. And, wonderfully, he bought it from the same dealer that sold it new back in 2007.

As no stranger to running big BMWs, he was aware of the cost of doing business and hasn’t stinted in its maintenance, running up big bills with Redish Motorsports and Berry Cobham in the past four years.

As you’d expect of a premium car like the M6 (one that would have set its first owner back around £90,000…), BMW’s build quality shines through, even now. With tight and consistent shutlines, perfect panel alignment, and ripple-free flanks, this is a car that reeks of careful curation.

The Interlagos Blue paintwork is in a fine condition too, with nothing more than the odd mark marring that lovely hue, mainly to the front end.

The lamp lenses are all bright and clear and free of damage, as is the window glazing. The badges are good too, even on the caps on the alloy wheels.

The folding hood is a three-layer design, making it almost as weathertight and quiet as the coupé. Of course, the advantage of this one is that it folds and it does so at the press of a button, the intricate mechanics tucking it away in a balletic motion that’s mesmerising to watch – and you even get mini flying buttresses a la Jaguar XJS, FTW; that the fabric is free of rips, tears, or other damage goes without saying.

Drawbacks to choosing the convertible over the coupé are few. Sure, you gain 200kgs in reinforcement but, as Which Car reported when the car was new: “I tell you, we were going more the 300km/h on the autobahn and the roof was perfect!” exclaimed a senior BMW PR type at a dinner prior to the car’s launch.

The open design of the five-spoke alloy wheels alloys you to admire the 374mm front brake discs, discs so huge they’re almost the same size as the wheels fitted to a Ford Transit…

Of course, you need big wheels to fit over Goliath brakes, which means the M6 sports a set of 19-inch monsters. All are in great shape with no dents, dinks or scrapes – plus, they’re clothed with a matching set of Michelin Pilot Sport tyres - 255/40ZR19 up front and 285/55ZR19 behind - that have been fitted during the seller’s tenure.

We will never get tired of telling you that experience shows that matching high-quality tyres are an infallible sign of a caring and mechanically sympathetic owner who is prepared to spend the appropriate amount in maintaining their car properly. Their presence does not, of course, preclude the need for a thorough inspection - something the vendor would welcome, by the way – but it does perhaps give you a shortcut into their attitude towards maintenance.

Work to do is minimal bordering on nil. There’s a tiny flaw on one seam of the roof (#36) but that’s about it.

The interior is trimmed in Silverstone Merino leather and vast swathes of walnut veneer, all complemented by brushed-alloy. As you can see, it looks spectacular and seats four in huge comfort, with the soft-close doors adding another luxurious note every single time you get in or out.

An M-Sport steering wheel and gearknob set a sporting note, something the heavily bolstered front seats and 200mph speedometer reinforce.

It’s practical too, with a head-up display, flappy paddles for the gearbox, heated seats and windscreen, a wind deflector, and a fancy cupholder for the passenger.

The infotainment centre controls just about everything, which makes for a clean and uncluttered dashboard.

The boot, which is wide and flat, is clean and nicely presented. The wind deflector can be stored away in there along with the tyre repair and tool kits.

As for flaws and faults, the driver’s seat does show a small amount of soiling plus a little softening (e.g. #136) but this is minimal and in line with the car’s mileage.

Other things to look at include the rear speakers, which look like they could do with replacing (#194), and the navigation system, which is missing its DVD (#231).

Oh, and it comes with an Eclipse outdoor car cover.

The engine bay is stuffed to the gunnels with that incredible V10 engine. Super-clean and beautifully presented, even the most finicky of owners would be happy to display it at their local Show ‘n’ Shine.

As you can see, it’s got the Go to match the Show as it starts perfectly, idles as it should, and revs nicely – and if the engine note is a little underwhelming, the exhaust note surely makes up for that, eh?

And that’s at standstill, imagine what it’s like going through a tunnel with the roof down: “Undoubtedly the best bit about lopping the roof off an M6 is that you can hear the glorious 5-litre V10 in all its mellifluous majesty, exhaust pipes woofling when you back off or howling when you keep it nailed to the far side of 8000rpm.” (Evo magazine, Nov 2006.)

The underside looks clean and solid, and no MoT tester has ever had cause to mention corrosion.

The BMW’s service record is recorded as follows:

• 27.03.2007 and 1,202 miles – service by L. J. Irvine of Bridgewater
• 14.04.2008 and 3,578 miles – service by Sytner High Wycombe
• 19.03.2009 and 11,208 miles – service and a change of brake fluid by Stephen James Enfield
• 26.04.2011 and 24,271 miles – service and a change of brake fluid by Stephen James Enfield
• 01.03.2012 and 28,614 miles – service by Scotthall Stirling Corner
• 02.05.2013 and 31,806 miles – service by Crystal Autocare Ltd., independent BMW specialist
• 13.05.2015 and 35,745 miles – service by Crystal Autocare Ltd., independent BMW specialist
• 26.04.2017 and 39,054 miles – service by Potters Bar Garage
• 25.05.2018 and 41,101 miles – service by Sytner High Wycombe
• 12.02.2019 and 41,143 miles – service and a change of brake fluid by Sytner High Wycombe
• 08.07.2020 and 42,410 miles – service by Redish Motorsports, an M-Series specialist, including a new clutch, flywheel, PLCD sensor, and slave cylinder at a cost of more than £4,000
• 06.04.2023 and 43,674 miles – service by Berry Cobham BMW including filters and spark plugs at a cost of more than £1,300

There are plenty of other invoices for repair work including repairs to the ABS system, a new battery, and much more.

The M6’s MoT certificate is valid until March 2024 – and it probably won’t surprise you to hear that the last four, since it’s been in the seller’s care, have been gained with no advisories whatsoever.

The recent Vehicle History Check is clear and it comes with two key fobs in addition to a hefty service history file and the BMW book pack.

Depreciation is an merciless lover, savaging anyone lucky enough to have had sufficient cash in the bank to buy a nigh-on six-figure supercar convertible a decade and a half ago.

Which is terrible news if you were that buyer but great news if you fancy buying one of the best long-distance touring cars on the planet because we think this one, with a full BMW main dealer and specialist service history and well under 50,000 miles on the clock, will sell for somewhere between £15,000 and £20,000, which is a bonkers pound:performance ratio.

Viewing is always encouraged, and this particular car is located with us at Bonhams|Cars Online HQ near Abingdon; we are open weekdays 9am-5pm, to arrange an appointment please use the Contact Seller button at the top of the listing. Feel free to ask any questions or make observations in the comments section below, or try our ‘Frequently Asked Questions’.