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2024 Mercedes-AMG SL55

Grand Tourer · 4.0L Twin-Turbo V8 · AWD

84/100

AutoVault's overall score, weighted for what a grand tourer is actually for — performance, technology, comfort, reliability, safety and value.

Specifications

Engine4.0L Twin-Turbo V8
Horsepower469 hp
Torque516 lb-ft
0–60 mph3.9 sec
Top speed155 mph
DrivetrainAWD
Seats4
Combined MPG15 mpg (13 city / 19 hwy)
Range272 miles
MSRP$140,050
Body styleGrand Tourer

The verdict

What's good

  • Classic V8 rumble with the top down
  • Grippy all-weather traction, rare for a roadster
  • Folding soft top is quick to operate
  • Genuine grand-touring comfort

What's not

  • Tiny rear seats fit kids at best
  • Trunk space limited with top stowed
  • Pricey scheduled servicing
  • Wide and heavy for back roads

The engine

M177

4.0L Twin-Turbo V8

AMG's hand-built 4.0-liter hot-vee twin-turbo V8 delivers thunderous, characterful muscle with a hard-edged bark — the engine that defines modern Affalterbach in cars like the SL and E63.

Assembled start-to-finish by a single technician under AMG's 'One Man, One Engine' creed, its builder's signature fixed to the engine on a plaque.

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