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HomeComparisonsBMW 8 Series vs Mercedes-Benz GLS-Class
Spec Battle Updated 20 April 2026 5 min read

BMW 8 Series vs Mercedes-Benz GLS-Class

A detailed look at how two of Australia's most popular cars 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.

SpecBMWMercedes-Benz
Price (RRP)$294,900$199,900
Fuel typePetrolDiesel
Power390kW270kW
0-100 km/h3.9s6.1s
Fuel Economy10.7 L/100km7.8 L/100km
Boot Space440L355L
Towing2,700kg
Warranty5yr / Unlimited5yr / Unlimited
ANCAP SafetyNo dataNo data

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Price Breakdown

The BMW 8 Series starts from $294,900 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 $95,000.

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 $324,390 and $219,890 respectively.

Over 5 years, the running costs favour the Mercedes-Benz GLS-Class by roughly $4,135 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 8 Series features a 10.3-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 8 Series stands out with heated front seats, ventilated seats and Bowers & Wilkins 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 8 Series gets vernasca leather upholstery while the Mercedes-Benz GLS-Class offers nappa leather.

Drivetrain

The BMW 8 Series uses a Petrol producing 390kW and 750Nm of torque, sent through a auto to a AWD layout. It covers the 0-100km/h sprint in 3.9 seconds.

The Mercedes-Benz GLS-Class responds with a Petrol making 270kW and 750Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 6.1 seconds.

The BMW 8 Series has the clear power advantage at 390kW vs 270kW. In the real-world sprint, the BMW 8 Series is 2.2s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

Space & Comfort

The BMW 8 Series measures 5,082mm long on a 3,023mm wheelbase, 133mm shorter than the Mercedes-Benz GLS-Class at 5,215mm (3,135mm wheelbase). The longer wheelbase on the Mercedes-Benz GLS-Class generally means more rear legroom.

Boot space is 440L in the BMW 8 Series and 355L in the Mercedes-Benz GLS-Class, giving the BMW 8 Series a 85L advantage. The Mercedes-Benz GLS-Class seats 7 vs 4.

0

Turning Circle

Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.

12.5m to 12.6m

Mercedes-Benz GLS-Class GLS 450 d 4MATIC
12.5mTighter
Best
BMW 8 Series M850i xDrive Gran Coupe
12.6m
Worst
BMW 8 Series M850i xDrive Gran Coupe
12.6m · Large

Based on 12.6m turning circle:

  • U-turn on standard street (7m+ wide)
  • Standard parking bay
  • Tight carparks
  • Narrow laneways
Mercedes-Benz GLS-Class GLS 450 d 4MATIC
12.5m · Large

Based on 12.5m turning circle:

  • U-turn on standard street (7m+ wide)
  • Standard parking bay
  • Tight carparks
  • Narrow laneways

Turning circle ratings

Under 10m, Excellent
10 to 11m, Good
11 to 12m, Average
Over 12m, Large

True Cost to Own

Based on 15,000km of annual driving, fuel costs roughly $3,050/year for the BMW 8 Series and $2,223/year for the Mercedes-Benz GLS-Class. That is a $827 annual difference in favour of the Mercedes-Benz GLS-Class.

Estimated annual total: $3,050 (BMW 8 Series) vs $2,223 (Mercedes-Benz GLS-Class). The Mercedes-Benz GLS-Class saves you roughly $827 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.

Warranty: 5 years / 999,999km (BMW 8 Series) vs 5 years / 999,999km (Mercedes-Benz GLS-Class). Both match on warranty length.

Who Should Buy Which?

Buy the BMW 8 Series if: You prioritise performance, need more boot space, or prefer BMW's approach to design and ownership experience.

Buy the Mercedes-Benz GLS-Class if: You want the lower entry price, want lower running costs, or prefer Mercedes-Benz's approach to design and ownership experience.

The Verdict

This is genuinely close. The BMW 8 Series and Mercedes-Benz GLS-Class trade blows across the spec sheet, and neither runs away with an outright win. The Mercedes-Benz GLS-Class will save you roughly $827 a year in fuel. If boot space matters, the BMW 8 Series 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 8 Series and Mercedes-Benz GLS-Class?

The Mercedes-Benz GLS-Class is the cheapest at $199,900 before on-road costs. That undercuts the BMW 8 Series by $95,000.

Which is the most fuel-efficient?

The Mercedes-Benz GLS-Class uses the least fuel at 7.8L/100km on the combined cycle.

What are the ANCAP safety ratings?

None of BMW 8 Series and Mercedes-Benz GLS-Class carry a published ANCAP rating yet — check back as they are tested.

Which has the most boot space?

The BMW 8 Series has the largest boot at 440L.

Which can tow the most?

The Mercedes-Benz GLS-Class has the highest braked towing capacity at 2,700kg.

Which is the most powerful?

The BMW 8 Series makes the most power at 390kW. The BMW 8 Series is quickest to 100km/h in 3.9s.

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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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