BMW X6 M vs Mercedes-Benz GLS-Class
A detailed look at how two of Australia's most popular SUVs compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Price Breakdown
The BMW X6 M starts from $247,900 before on-road costs, while the Mercedes-Benz GLS-Class opens at $199,900. That makes the Mercedes-Benz GLS-Class the more affordable entry point by $48,000.
Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $272,690 and $219,890 respectively.
Over 5 years, the running costs favour the BMW X6 M by roughly $2,425 in fuel alone.
Safety Rundown
ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.
Feature Showdown
The BMW X6 M features a 14.9-inch touchscreen paired with a 12.3-inch digital dash, while the Mercedes-Benz GLS-Class gets a 12.3-inch display and 12.3-inch instruments. Apple CarPlay and Android Auto are standard across both.
The BMW X6 M stands out with heated front seats, ventilated seats and Harman Kardon audio that you will not find on the Mercedes-Benz GLS-Class. The Mercedes-Benz GLS-Class counters with Burmester audio and ambient lighting. Which feature set matters more depends on your daily routine and priorities.
Interior trim differs: the BMW X6 M gets merino leather upholstery while the Mercedes-Benz GLS-Class offers nappa leather.
Drivetrain
The BMW X6 M uses a Petrol producing 460kW and 750Nm of torque, sent through a auto to a AWD layout. It covers the 0-100km/h sprint in 4.8 seconds.
The Mercedes-Benz GLS-Class responds with a Petrol making 270kW and 500Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 5.9 seconds.
The BMW X6 M has the clear power advantage at 460kW vs 270kW. In the real-world sprint, the BMW X6 M is 1.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The BMW X6 M measures 4,960mm long on a 2,975mm wheelbase, 247mm shorter than the Mercedes-Benz GLS-Class at 5,207mm (3,135mm wheelbase). The longer wheelbase on the Mercedes-Benz GLS-Class generally means more rear legroom.
Boot space is 600L in the BMW X6 M and 680L in the Mercedes-Benz GLS-Class, giving the Mercedes-Benz GLS-Class a 80L advantage. The Mercedes-Benz GLS-Class seats 7 vs 5.
For towing, the Mercedes-Benz GLS-Class leads with a 3,500kg braked capacity vs 3,500kg. That 0kg difference matters if you regularly hitch up.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
12.7m to 12.8m
Based on 12.7m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Based on 12.8m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $2,508/year for the BMW X6 M and $2,993/year for the Mercedes-Benz GLS-Class. That is a $485 annual difference in favour of the BMW X6 M.
Estimated annual total: $2,508 (BMW X6 M) vs $2,993 (Mercedes-Benz GLS-Class). The BMW X6 M saves you roughly $485 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years / 999,999km (BMW X6 M) vs 5 years / 999,999km (Mercedes-Benz GLS-Class). Both match on warranty length.
Who Should Buy Which?
Buy the BMW X6 M if: You prioritise performance, want lower running costs, or prefer BMW's approach to design and ownership experience.
Buy the Mercedes-Benz GLS-Class if: You want the lower entry price, need more boot space, or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
The BMW X6 M takes 3 of 5 key spec categories. The BMW X6 M will save you roughly $485 a year in fuel. If boot space matters, the Mercedes-Benz GLS-Class has a clear edge. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, BMW X6 M and Mercedes-Benz GLS-Class?
The Mercedes-Benz GLS-Class is the cheapest at $199,900 before on-road costs. That undercuts the BMW X6 M by $48,000.
Which is the most fuel-efficient?
The BMW X6 M uses the least fuel at 8.8L/100km on the combined cycle.
What are the ANCAP safety ratings?
None of BMW X6 M and Mercedes-Benz GLS-Class carry a published ANCAP rating yet — check back as they are tested.
Which has the most boot space?
The Mercedes-Benz GLS-Class has the largest boot at 680L.
Which can tow the most?
The BMW X6 M has the highest braked towing capacity at 3,500kg.
Which is the most powerful?
The BMW X6 M makes the most power at 460kW. The BMW X6 M is quickest to 100km/h in 4.8s.
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Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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