Indeed we do, and the M5 is one of the division's most iconic nameplates. Here, then, is the 2018 model, the sixth generation and possibly one of the most controversial yet.
Really? Looks conventional enough.
At first glance it appears that BMW hasn't changed the recipe all that much. The body of the 'G30' 5 Series gets enlarged bulges, holes and edges in all the right places to allow it to gulp more cooling air while cleaving through the air with more ease and using that same air to help keep it planted on the road. As is the usual BMW M way, there are no massively obvious aerodynamic appendages, though look closely and you'll see a modest boot lip spoiler, slipperier mirrors and a rear diffuser. There are gorgeous 20-inch bicolour alloy wheels as standard, too, and, for the first time in an M5, a carbon fibre roof.
Ok, all good, but nothing radical. Inside?
Pretty much as you'd expect, too, including lovely leather seats with M5 logos and lots of electrical adjustment, a round steering wheel with gearchange paddles behind and plenty of M-specific badging and detailing. There's a gearchange light system, head-up display and lacquered red for the M1 and M2 buttons, plus a bright red start button. You may also notice the large new gear selector surrounded by the various driving mode switchgear.
Still a dual-clutch auto?
No. BMW has replaced that unit with a far superior eight-speed automatic transmission with plenty of modes to choose from, but that's not the big news. The headline grabbing fact is that BMW has given the M5 four-wheel drive for the first time. It's a very different system to that offered across the BMW line-up, as it features an upgraded version of the excellent Active M Differential at the back, and it's christened M xDrive. Fear not, as hardcore rear-drive diehards can still turn off the stability control and choose a 2WD mode, along with a midway 4WD Sport setting.
Tasty! How much power has it to work with?
A nice round 600hp, though that's backup by a substantial 750Nm of torque, produced from as low as 1,800rpm, all from a considerably upgraded twin-turbocharged 4.4-litre V8 petrol engine. A modest weight reduction, that output and the all-wheel-drive traction means BMW can quote an astounding 0-62mph time of just 3.4 seconds, with the usual 155mph limiter well and truly needed at the top end.
When can I get mine?
The new BMW M5 goes on sale in February 2018, starting at £89,640 on-the-road.