BMW XM vs Mercedes-Benz SL-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.
Data checked: specs 27 Sep 2026, price 24 Jun 2026
Driver assistance, as the maker lists it
Swipe across. Tap a feature to see what it does and each car's source.
StandardOptional: printed price, +pack or NCO (no-cost)No, not offeredNo dataCounts beside each car use the same colours; ? is no option data.
From each manufacturer's Australian equipment list. No data means that car's document does not say. The drawings are our own illustrations of how each kind of system works.
BMW XM: we're still completing kerb weight, electric range and energy consumption.
A blank cell below means we don't have that figure, not that the car scores badly on it. We leave them empty rather than estimate, so any row where one car is blank isn't a like-for-like comparison yet.
$309,900RRP
- with the Mercedes-Benz SL-Class's standard kit: $309,900 (nothing to add)
$386,500RRP
- no option data for this car
Printed option prices only. A pack is counted once and makes the figure a floor when it carries no printed price. Nothing is inferred from the other car.
Plug-in hybrid fuel economy is shown as a hybrid (battery depleted) so it compares fairly with the other car. A PHEV's official "combined" figure assumes you start every trip fully charged, so real-world economy depends on how often you plug in. Electric range shows how far it goes before the petrol engine is needed.
Track the BMW XM & Mercedes-Benz SL-Class
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Price Breakdown
The BMW XM starts from $309,900 before on-road costs, while the Mercedes-Benz SL-Class opens at $386,500. That makes the BMW XM the more affordable entry point by $76,600.
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 $340,890 and $425,150 respectively.
Over 5 years, the running costs favour the BMW XM by roughly $16,740 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.
Recalls on our record
BMW XM
- REC-005906 · published 5 Mar 2024Due to a manufacturing defect, signal interference may occur within the electronics of the brake system.Year range on the notice: 2022 - 2023
Mercedes-Benz SL-Class
- REC-003905 · published 20 Nov 2019The front passenger airbag may not have been sewn in accordance with the specifications.Year range on the notice: the notice prints no build range
A recall covers the builds its notice lists, not every car of a model. Check your VIN at vehiclerecalls.gov.au.
Charging Times
How long each takes to charge, from a household power point to ultra-rapid DC, estimated from battery size and max charge rates.
How long to charge
25.7kWh usableEstimates from usable battery size and the car's max charge rates (7.4kW AC). Real times vary with temperature, starting charge, charger output and the charging curve.
Feature Showdown
The BMW XM features a 14.9-inch touchscreen paired with a 12.3-inch digital dash, while the Mercedes-Benz SL-Class gets a 11.9-inch display and 12.3-inch instruments. Apple CarPlay and Android Auto are standard across both.
The BMW XM stands out with ventilated seats, power tailgate and Bowers & Wilkins audio — features our data doesn't list for the Mercedes-Benz SL-Class. The Mercedes-Benz SL-Class counters with Burmester audio. Which feature set matters more depends on your daily routine and priorities.
Interior trim differs: the BMW XM gets merino leather upholstery while the Mercedes-Benz SL-Class offers nappa leather. Climate control is 4-zone in the BMW XM and 2-zone in the Mercedes-Benz SL-Class.
Drivetrain
The BMW XM uses a Plug-in Hybrid producing 550kW and 1000Nm of torque, sent through a auto to a AWD layout. It covers the 0-100km/h sprint in 3.8 seconds.
The Mercedes-Benz SL-Class responds with a Petrol making 430kW and 800Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 3.9 seconds.
The BMW XM has the clear power advantage at 550kW vs 430kW. In the 0-100 sprint (manufacturer-claimed), the BMW XM is 0.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The BMW XM measures 5,110mm long on a 3,105mm wheelbase, 405mm longer than the Mercedes-Benz SL-Class at 4,705mm (2,700mm wheelbase). The longer wheelbase on the BMW XM generally means more rear legroom.
Boot space is 527L in the BMW XM and 213L in the Mercedes-Benz SL-Class, giving the BMW XM a 314L advantage. The BMW XM seats 5 vs 2.
0Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.4m to 11.6m
Based on 11.4m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Based on 11.6m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
Compare U-turns side by side
Turning Circle · U-turn compare
kerb-to-kerb, 2 cars0 of 2 clear a 7.0 m street in one sweep
Green cars complete the U-turn; amber need a 3-point turn. Drag the slider to test tighter streets.
Standard widths: AU local streets ~5.5–7 m; main roads ~9–12 m.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $614/year for the BMW XM and $3,962/year for the Mercedes-Benz SL-Class. That is a $3,348 annual difference in favour of the BMW XM.
Warranty: 5 years / 999,999km (BMW XM) vs 5 years / 999,999km (Mercedes-Benz SL-Class). Both match on warranty length.
Who Should Buy Which?
Buy the BMW XM if: You want the lower entry price, prioritise performance, need more boot space, want lower running costs, or prefer BMW's approach to design and ownership experience.
Buy the Mercedes-Benz SL-Class if: You or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
BMW XM: Top CarSorted Score, 59 vs 49
The BMW XM comes out ahead on the CarSorted Score (59 vs 49), taking 5 of 5 key spec rows below and coming in at a lower price. The deciding gaps: practicality (BMW XM ahead by 47), value (BMW XM ahead by 24), fuel economy (Mercedes-Benz SL-Class ahead by 10). The BMW XM will save you roughly $3,348 a year in fuel. If boot space matters, the BMW XM 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 XM and Mercedes-Benz SL-Class?
The BMW XM is the cheapest at $309,900 before on-road costs. That undercuts the Mercedes-Benz SL-Class by $76,600.
Which is the most fuel-efficient?
The BMW XM uses the least fuel at 2.7L/100km on the combined cycle.
What are the ANCAP safety ratings?
None of BMW XM and Mercedes-Benz SL-Class carry a published ANCAP rating yet, so there is no crash result to compare. Check back as they are tested.
Which has the most boot space?
The BMW XM has the largest boot at 527L with the seats up.
Which can tow the most?
The BMW XM has the highest braked towing capacity at 2,700kg.
Which is the most powerful?
The BMW XM makes the most power at 550kW. The BMW XM is quickest to 100km/h in 3.8s.
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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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