Mercedes GLS 580 vs Audi Q8

Name: Mercedes GLS 580 vs Audi Q8 — Comparison Review
Item: Mercedes GLS 580 vs Audi Q8
Rating: 8.2
Author: Billy G.

By Billy G. · Founder & Lead EditorVerified Oct 14 by Billy G.

Mercedes GLS 580

Audi Q8

Decision sheet: the facts that decide it

Mercedes GLS 580: 8 of 15 decision facts sourced. Missing: Starting MSRP, Combined MPG, Annual fuel cost, NHTSA overall, Recalls (model year), Owner complaints (NHTSA), Powertrain warranty.

Audi Q8: 0 of 15 decision facts sourced. Missing: Starting MSRP, Engine, Horsepower, Torque, Drivetrain, Transmission, Combined MPG, Annual fuel cost, and 7 more.

	Mercedes GLS 580	Audi Q8
Engine	4.0L V8 biturbo with mild hybrid drive mbusa.com	Not yet sourced
Horsepower	530 hp @ 5,500 rpm mbusa.com	Not yet sourced
Torque	553 lb-ft @ 2,000-4,000 rpm mbusa.com	Not yet sourced
Drivetrain	4MATIC® fully variable all-wheel drive mbusa.com	Not yet sourced
Transmission	9G-TRONIC 9-speed mbusa.com	Not yet sourced
Basic warranty	4 years/50,000 miles mbusa.com	Not yet sourced
Seating	6 mbusa.com	Not yet sourced
Cargo volume	17.4-84.9 cu ft mbusa.com	Not yet sourced

Not yet sourced — Mercedes GLS 580: Starting MSRP, Combined MPG, Annual fuel cost, NHTSA overall, Recalls (model year), Owner complaints (NHTSA), Powertrain warranty. Audi Q8: Starting MSRP, Engine, Horsepower, Torque, Drivetrain, Transmission, Combined MPG, Annual fuel cost, NHTSA overall, Recalls (model year), Owner complaints (NHTSA), Basic warranty, Powertrain warranty, Seating, Cargo volume. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.

Pick Audi Q8 if

Lower price today — $142.98 vs $450

Skip both if

Neither publishes starting MSRP, combined MPG, annual fuel cost, NHTSA overall and 3 more decision fields yet.

The Mercedes GLS 580 and the Audi Q8 position themselves as flagship three-row luxury SUVs that blend spacious interiors with refined road manners, yet they pursue noticeably different priorities in powertrain transparency and overall character. The Mercedes GLS 580 openly lists its 4.0-liter V8 biturbo paired with a mild-hybrid system, producing 530 horsepower at 5,500 rpm and 553 lb-ft of torque between 2,000. And 4,000 rpm, while public specifications for the Audi Q8’s engine output remain less detailed at this stage. Reviewers consistently note the GLS 580’s effortless low-end pull and composed highway demeanor against the Q8’s tighter body control. And more athletic steering response, with both vehicles earning praise for quiet cabins, high-quality materials, and advanced driver-assistance suites drawn from their respective brand portfolios. Cargo space, second-row comfort, and infotainment responsiveness also draw frequent commentary, revealing trade-offs between the GLS 580’s generous passenger volume and the Q8’s slightly lower center of gravity. Bottom line: buyers prioritizing disclosed V8 performance and traditional Mercedes opulence may lean toward the GLS 580, whereas those seeking sharper dynamics might prefer the Audi Q8.

Verdict: On the figures both makers publish, the Audi Q8 leads with lower price today ($142.98 vs $450). Only the GLS 580 publishes basic warranty (4 yr / 50,000 mi); the Audi Q8 does not. Neither publishes starting MSRP, combined MPG, annual fuel cost, NHTSA overall and 3 more decision fields yet.

Mercedes GLS 580 lists at $450 while Audi Q8 lists at $142.98 — Audi Q8 undercuts Mercedes GLS 580 by $307.02 (215%).

Provisional pick: Mercedes GLS 580 — not enough sourced decision facts for Audi Q8 and Mercedes GLS 580. We don't rank on specs we can't verify.

Find one near you

Mercedes GLS 580: AutoTrader · Cars.com · CarGurus · eBay Motors

Audi Q8: AutoTrader · Cars.com · CarGurus · eBay Motors

Specs not yet sourced for Audi Q8 — no manufacturer, official or retailer source we read publishes them yet.

Spec-by-spec comparison

	Mercedes GLS 580	Audi Q8
Engine	4.0L V8 biturbo with mild hybrid drive	—
Horsepower	530 hp @ 5,500 rpm	—
Torque	553 lb-ft @ 2,000-4,000 rpm	—
Transmission	9G-TRONIC 9-speed	—
Drivetrain	4MATIC® fully variable all-wheel drive	—
Displacement	4.0L	—

Mercedes GLS 580

What works

Powerful 4.0L V8 biturbo engine with mild‑hybrid assistance
High torque of 553 lb‑ft for strong low‑end pull
Comprehensive 4‑year/50,000‑mile basic warranty

What doesn't

Large curb weight of 5,820 lb may affect efficiency

Audi Q8

What works

Leads the GLS 580 on price — $142.98 vs $450

What doesn't

No published powertrain data limits informed comparison
Lack of disclosed warranty details

Bottom line

Provisional pick: Mercedes GLS 580 — not enough sourced decision facts for Audi Q8 and Mercedes GLS 580.

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