Gas Is Brake. What?

Twist the key, and then thumb the tiny starter button, gently squeezing the gas pedal. There’s the slow-motion metallic sound of heavy machinery turning over, then the big six fires up with a guttural rumble. Move the spark advance/retard lever back to the halfway point to keep the engine happy at higher revs, and you’re ready to roll. Almost. The clutch in the Maharaja Mercedes is being cantankerous today. Even with the pedal fully depressed, it’s proving impossible to engage first gear without an almighty graunch from the transmission. I grit my teeth and muscle the long shift lever forward, momentarily suppressing my mechanical sympathy as the gears collide and complain. We’re in! Now comes the tricky part.

As in many cars of the era, the gas pedal of the W06 Mercedes is in the middle of the usual manual-transmission three-pedal layout, with the brake located to the right and the clutch to the left, and it’s very easy to instinctively stab the gas when you need the brake. Following the other participants in the 2025 Mercedes-Benz Classic W06 Tour, enthusiasts who have brought their own cars from around Europe and the U.S. to spend two days driving them around southern Germany, I ease the big Benz off the test track, through the Sindelfingen factory grounds, and out onto the road, managing the double declutch shift from first to second gear without any metal-on-metal noise from the transmission. We’ve barely touched 10 mph, but I’m as focused on my driving as I was pushing a Porsche 911 GT3 at the Nürburgring Nordschleife.

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The key to mastering the Maharajah Mercedes, I learn, is not to rush anything. Shifting gears is a deliberate process; clutch in, move the shifter, clutch out, with a pronounced shove on the gas pedal to rev the engine if you’re downshifting, then clutch in, and move the shifter. Sometimes you get it right, but with the clutch misbehaving, anything other than the first-to-second shift turns into a crap shoot that often results in a noisy grinding of gears.

The steering takes a lot of muscle to get the car through 90-degree turns at slow speeds, and you need to be keenly aware of the road and the traffic a long way ahead, because even at 30 or 40 mph, the big drum brakes take a relaxed approach to slowing the car. Plus, of course, you need that fraction of a second extra to remember to move your foot to the right from the gas pedal to find the brake pedal. On the longer downhills, it’s prudent to also use the e-brake to keep the big Benz under control.

Lumbering Along on the Autobahn in the White Elephant

Fortunately, that big straight-six has a ton of torque, shouldering the big Mercedes along from as little as 400 rpm, which reduces the need for frequent gear shifts. The Maharaja Mercedes is a much easier car to handle than the 1904 Mercedes Simplex I drove in the 2023 London to Brighton Veteran Car Rally. But it doesn’t feel as modern as the swoopy 500 K roadster I sampled briefly at Pebble Beach a few years back, not the least because that car, built just four years later in 1934, was smaller and lower and lighter and had all the pedals in the correct order across the floor.

On the autobahn, the Mercedes SS cruises happily at 60 mph, the big straight-six turning a relaxed 1,700 rpm, the exhaust whump-whump-whumping like the rotor blades of a Huey chopping through the tropical air in Apocalypse Now. Cruising, says Brit John Bentley, whose low-slung, Gläser-bodied S sports tourer hews more to the sportier side of the W06’s character, is something at which these big Benzes excel. Bentley, who also owns the supercharged contemporary of the Mercedes, a Bentley Blower, says that while the British car is the quicker of the two with the supercharger engaged, the Mercedes is the more comfortable to drive long distances.

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Punching the gas pedal to the floor to engage the SS’ supercharger would add 40 horses to the engine’s naturally aspirated peak output of 160 hp, but as the supercharger’s clutching system is notoriously fragile, I resist the temptation. Breitschwerdt had briefly poked the bear on the drive to Sindelfingen that morning so I could hear the supercharger’s signature bellow, a distinctive trumpeting sound that gave the white-painted racing versions of the W06, the SSK and SSKL roadsters, the nickname “White Elephants” among racing fans. “The mechanics say I shouldn’t do this,” he said as he punched the gas and kicked the supercharger into action. Then he lifted off, turned, and looked at me, smiling. “But I am the boss.”

I can only imagine what it must have been like to see the Maharaja Mercedes speeding down the road, supercharger bellowing, in 1931. Today’s equivalent automotive shock and awe would be seeing a Ferrari Daytona SP3 scream by with its naturally aspirated V-12 nuzzling 9,500 rpm. Of course, there have been Mercedes racing cars since the very dawn of the automotive era. But it was the fast and powerful supercharged W06, launched after the merger of Daimler and Benz in 1926, that teased out the first strands of a high-performance Mercedes road car DNA that can still be found today in the company’s thundering AMG models.

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