2026 Mercedes-Benz GLS 580 4MATIC

Full-Size SUV · 4.0L Biturbo V8 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

Engine	4.0L Biturbo V8 MHEV
Horsepower	510 hp
Torque	516 lb-ft
0–60 mph	5 sec
Top speed	130 mph
Drivetrain	AWD
Seats	7
Combined MPG	15 mpg (13 city / 19 hwy)
Range	272 miles
MSRP	$116,150
Body style	Full-Size SUV

The verdict

What's good

Air suspension delivers limo-smooth ride even over sharp urban bumps
Third row is genuinely adult-usable, not a compromise
E-Active Body Control keeps the massive SUV flat through corners
Interior craftsmanship matches or beats every direct rival

What's not

Reliability scores consistently trail BMW and Lexus competition
Infotainment menu depth can overwhelm first-time Mercedes owners
Service costs at independent shops are substantially higher than mainstream brands
Short real-world range between fill-ups limits road-trip convenience

The engine

AMG Hot-V V8

Twin-Turbo V8 Mild Hybrid

A hand-built 4.0-liter biturbo V8 with a deep, layered roar, here softened slightly for the GLS but still delivering muscular, refined shove backed by a 48-volt boost.

The M177 was designed by Mercedes-AMG in Affalterbach to replace the M157, and pairs an EQ Boost 48-volt mild-hybrid system with the GLS 580's V8.

Its two BorgWarner turbochargers sit inside the vee in a 'hot-V' layout instead of outboard of the cylinder banks.
Each engine is assembled by a single technician under AMG's 'one man, one engine' principle, signed with a personal nameplate.
The EQ Boost starter-generator adds up to 22 hp and 184 lb-ft on demand while enabling smooth stop-start and coasting.

See the rest in AutoVault

The six sub-scores behind the 84 — performance, tech, comfort, reliability, safety and value
Market value today and year-by-year value history
All 4 trims with pricing
Studio photography — exterior, rear and interior
Side-by-side comparison with up to four cars

Open in AutoVault