Curbside Classics: 1988 BMW M5 – The World’s Fastest Sedan x2, Hiding In Plain Sight

1988 BMW M5

If I were to create a list of my favorite cars, BMW’s M5 would be near the top.  It’s fast, fun, rare, and spectacularly understated – all qualities I admire.  Since only about 1,300 were imported to North America three decades ago, these aren’t cars one comes across regularly.  Imagine my surprise when I saw two M5s within a month!  Fittingly, both of these cars were parked in everyday settings.  This was the world’s fastest sedan when it was introduced, yet the car’s lack of visual pretension meant that to most people, it looked like an ordinary BMW.  I suppose I caught these two cars in their natural habitat: Hiding in plain sight.

“M” in this case designated BMW’s Motorsport GmbH Division, which developed the M1 supercar in the late 1970s – a car that was unlikely to hide anywhere.

1988 BMW M Series ad

A decade later, the Motorsport Division created “M” versions of BMW’s three model ranges, the 6, 5 and 3.  These M cars became the flagships of their respective model ranges and elevated BMW’s (already high) performance credentials.  It’s the M5 that we’re looking at today – overzealous performance wrapped in an aging sedan package.

1982 BMW 528e ad

BMW’s second generation of 5 series cars, known as the E28, became an iconic sedan design when introduced in 1981.  With its forward-leaning grille, airy greenhouse, athletic profile, and prolific visual cues to earlier BMWs, this car defined its brand in the 1980s.  An antithesis of that decade’s trend toward aero designs, the narrow, upright, chiseled 5 series still pulled in strong sales.  While many (most?) North American models were rather pedestrian 528e models, the sportier 535i and 535is variants offered more power and better handling, evoking the qualities of earlier sporting BMWs.  Then the M5 came along.

The M5’s signature feature was that BMW essentially transplanted the M1’s 24-valve DOHC six-cylinder engine into the 5-series.  This degree of trickle-down performance seemed like the stuff of dreams at the time, yet BMW did it.  Turning out 286hp in European form (more than the M1 since BMW added Bosch Motronic fuel injection), that was enough to propel this sedan to 60 mph in 6.2 seconds.  To put that in perspective, the power and acceleration was roughly on par with the contemporary Ferrari 328.

Debuting in February 1985 at the Amsterdam International Motor Show, the M5 was quickly hailed as the world’s fastest sedan.  Continental Europe got its M5s first, right-hand drive UK cars came out in mid 1986… and as always, North Americans had to wait.

1988 BMW M5 right front

North American models went on sale in February 1987 (all North American E28 M5s were sold as 1988 models).  As typical for the times, US emissions equipment drained a good bit of power.  These cars developed “only” 256hp, adding a fraction of a second to the European M5’s 0-60 time.  Fortunately for North American customers, a sedan capable of reaching 60mph in 6.5 seconds was still remarkable.

North American M5s were all largely similar – available only in black, only with a manual transmission, and the only option was $200 for heated seats.  Tan was officially the only interior color offered on US models, though Canadians could choose black as well.  Some black-interior M5s were sold in the US late in the production run (which ran into late 1987), but only a few dozen black-interior M5s made it across the Atlantic.

1988 BMW M5 right rear

A sedan with a Ferrari’s performance is amazing, but my favorite aspect of this car is that it looks downright ordinary.  Only a few subtle M5 badges, BBS alloy wheels on chunky tires, and understated front and rear spoilers differentiated the M5 from the sedate 528e.  Most people wouldn’t notice the clues.  As such, this car didn’t attract buyers interested in showing off.  With a US list price of $45,500, the M5 cost 50% more than the base 528e, yet looked mighty similar.

1988 BMW M5 ad

There was no question that the M5 would be a limited-production vehicle, but demand was higher than BMW anticipated.  That was good news for BMW, though it got the company in a bit of trouble.  In this Spring 1987 US magazine ad, BMW stated that “there are only 500 of them available this year.”  Ultimately, BMW sold 1,239 M5s in the US, and another 101 in Canada.  Some of the original buyers – aggravated that their limited-production models wouldn’t be quite as rare as they’d assumed – filed a class action lawsuit against BMW.  The litigants won a minor victory.  To settle the case, BMW provided all original owners with a $4,000 voucher towards the purchase of a new BMW.  Like many class action suits, law firms ended up with more rewards than the “harmed class members.”  In fact, most of those certificates (which were transferable) were bought from the owners for a fraction of their value by brokers who then resold them.

1988 BMW M5 left front

The second of our featured M5s looks different than most.  With its smaller, European bumpers and extra graphics, I’d assumed this was either a European model recently imported, or a regular 5-series turned into an M5 tribute.  However, this is a North American M5 – it must have undergone cosmetic surgery at some point to replace the protruding US-mandated bumpers with more attractive European ones.  I don’t blame the owner for doing so, since these bumpers greatly improve the car’s aesthetics.

While I don’t have interior shots of either of our featured cars, it’s worth looking at a webfind image to note that the M5’s interior is just as understated as the exterior.  Swatches of M colors in the sport seats’ backrests, and a similar color pattern on the steering wheel, shifter and tachometer are all that differentiate the M5’s driving compartment from that of other 5-series.

1988 BMW M5 left side

As for mechanical equipment, BMW did modify more than just the engine on these cars.  Other performance-related items included larger brakes, stiffer springs with high-performance shocks, thicker anti-roll bars and wider wheels.  North American M5s also received a load-leveling rear suspension.  The M5 wasn’t just fast… it also handled extreme speeds with outstanding confidence and ability.

1988 BMW M5 right rear

Road & Track’s Paul Frere perhaps summed up this car best.  After driving a European M5, he said “…despite its external appearance and generous accommodation for four or even five passengers and their luggage, is the next best thing to a full-blood sports car.”  Given that Frere was a race driver and an excellent journalist, I trust his judgment on this.

In today’s world of 290-hp minivans and Tesla sedans that can hit 60 mph in 4 seconds, the M5’s performance credentials may not seem that extraordinary.  However, in the 1980s a sedan this fast seemed impossible.  The M5 offered performance typically reserved for 2-seater exotics, but with the luxury and practicality of a mid-size sedan.  Like an automotive version of a triathlete, this car offered performance, practicality and luxury in one package.

Perhaps the best indication of just how far cars have come in the last few decades is this sarcastic comment left a few years ago by someone selling a 1988 M5 on Bring A Trailer.  It’s somewhat of an exaggeration, but a modern Camry could give the world’s fastest sedan of the 1980s a run for its money.

1988 BMW M5 left rear

The E28 M5 spawned several decades of successors; today one can pick up a new 700+ hp M5 for about $120,000.  However, this car’s legacy stretches beyond the rarified world of BMW flagships.  The M5 opened the door for other high-performance sedans and blurred the lines between performance and practicality.  That’s quite a legacy to hide in plain sight.

 

Car#1 photographed in Fairfax Station, Virginia in May 2023.

Car #2 photographed in Vienna, Virginia in June 2023.