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UNLOCKED the TOP SPEED of my E55 AMG – WILL IT GO 300km/h?! by AutoTopNL
There’s still plenty of love for the W211 Mercedes-Benz E-Class. For those not familiar with Merc’s platform designations, this is the third-gen E-Class that spanned a majority of the 2000s. In E 55 AMG trim, both sedans and estates packed a supercharged 5.4-liter V8 engine churning out 469 horsepower (350 kilowatts). That’s still a hefty figure today, so you can imagine what these monster Mercs were like 15 years ago.
Actually, you don’t have to imagine. AutoTopNL has a 2004 E 55 wagon primed and ready for a speed run on unrestricted sections of Germany’s Autobahn, and it’s blissfully stock save for two features. Being an early model, it wears an upgraded E 63 fascia. But for the purposes of this video, you’ll be more interested in the factory speed limiter that’s been wiped away. Mercedes-Benz originally set that speed at 155 mph, but without restriction, how fast can this 18-year-old AMG wagon go?
Before making any wagers, here are a few more mechanical tidbits to consider. A five-speed automatic transmission is paired with the V8, and that final cog is a long one. It requires a healthy chunk of highway to fully stretch its legs, but with enough space, there is still ample power for impressive velocities. In fact, it’s more than ample – despite the age and approximately 62,000 miles on the odometer, the wagon posted around 500 hp (373 kilowatts) on a recent dyno pull. With a fresh set of Michelin Pilot Sport 5 tires all around, all that’s required is a clear highway.
And that’s just what we get for a series of speed runs. The first blast easily sees the big Merc surpass its original electronic limit, though acceleration noticeably slows once the car shifts into fifth gear around 130 mph. It steadily climbs, however, ultimately reaching 168 mph before letting off for another attempt. This time the speedometer gets as close as you can get to 300 km/h (186 mph) without going over. Traffic forces a throttle lift, but the final attempt sends the E 55 wagon over the top. 303 km/h (188 mph) shows on the speedometer, with 297 km/h (185 mph) briefly registering on GPS.
It takes nearly a minute for the E 55 to reach that figure, suggesting it’s well and truly the car’s aero-limited maximum speed. Considering a new Audi RS6 Avant tops out at 190, it’s not a bad showing at all for the old Mercedes.
