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2024 Mercedes-Benz GLS 450 4MATIC

Full-Size SUV · 3.0L Turbo I6 MHEV · AWD

84/100

AutoVault's overall score, weighted for what a full-size suv is actually for — performance, technology, comfort, reliability, safety and value.

Specifications

Engine3.0L Turbo I6 MHEV
Horsepower362 hp
Torque369 lb-ft
0–60 mph5.9 sec
Top speed130 mph
DrivetrainAWD
Seats7
Combined MPG20 mpg (18 city / 23 hwy)
Range328 miles
MSRP$88,050
Body styleFull-Size SUV

The verdict

What's good

  • Genuine three-row family room
  • Limousine-smooth air-spring ride
  • Whisper-quiet, airy cabin
  • Smooth, refined six-cylinder pull

What's not

  • Sheer size hard to park
  • Tall body leans in fast corners
  • Loaded examples climb in price
  • Thick pillars hurt rear visibility

The engine

M256

3.0L Turbo I6 Mild-Hybrid

The M256 marks Mercedes' return to the straight-six — silky and refined, with an electric auxiliary compressor and 48-volt mild-hybrid that banish turbo lag for instant, seamless thrust.

Mercedes abandoned inline-sixes for V6s in the 1990s, then revived the layout in 2017 because the straight-six's natural balance suited electrification — the belt-driven accessories are gone, run electrically instead.

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