Mercedes-Benz GLS-Class vs Lexus RX
What's the difference?

Mercedes-Benz GLS-Class

$170,169 - $424,900

2026 price

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Lexus RX

$101,200 - $111,100

2026 price

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Mercedes-Benz GLS

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Summary

2026 Mercedes-Benz GLS-Class

2026 Lexus RX

By Mark Oastler

By Emily Agar

Safety Rating

Engine Type

Diesel Turbo 6, 2.9L

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Fuel Type

Diesel

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Fuel Efficiency

7.8L/100km (combined)

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Seating

Likes

Big GVM/GCM ratings
Active air suspension
Performance/economy

Smooth & refined
Premium features
Family-friendly rear seat

Dislikes

No ANCAP rating
High purchase price
Intrusive voice activation

Relatively short EV-only range
No spare tyre, just a repair kit
Raised rear seat cramped for tall people

2026 Mercedes-Benz GLS-Class Summary

The ‘Upper Large SUV over $120K’ segment of the Aussie new-car market is what you might call the top end of town, not only in terms of the extravagant models available but also their purchase prices, which stretch well into six figures and require monthly lease payments that rival home mortgages.

It’s where you’ll find some of the most prestigious marques in the automotive world including Rolls-Royce, Aston Martin, Bentley, Ferrari, Lamborghini, Range Rover, Lexus and BMW. And, of course, Mercedes-Benz with its big GLS which represents the flagship of the German manufacturer’s SUV fleet.

It was given a refresh in 2023 with cosmetic and multimedia upgrades along with powertrain enhancements, but there have only been minor changes since then. We were recently entrusted with the keys to the latest GLS to see if the ‘S-Class of SUVs’ leaves any room for improvement.

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2026 Lexus RX Summary

Lexus has finally brought a plug-in hybrid to the Australian market with the RX450h+, and we’ve been testing the second-from-the-top Sports Luxury grade to see how it stacks up.

Promising a blend of electric efficiency and the high-end comfort Lexus is known for, this large SUV steps into a competitive segment. But does it deliver on both fronts?

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Deep dive comparison

2026 Mercedes-Benz GLS-Class 2026 Lexus RX

Verdict

The GLS450d impresses as an entry-level grade, as it’s a more family-friendly allrounder than the specialised AMG and Maybach variants. Its combination of a torque-rich diesel 48V hybrid drivetrain, air-cushioned suspension and plush interior are as well suited to luxury urban travel as they are to grand touring, where its heavy towing and generous load-carrying capabilities can shine. Whether it’s worth around $200K drive-away, only those who shop at the top end of town can decide.

Verdict

The new Lexus RX450h+ Sports Luxury is packed with a wealth of premium features and strikes a solid balance between refinement and practicality. There are enough thoughtful touches that make everyday driving a little easier.

You’ll get the most out of the plug-in hybrid powertrain if you’re able to charge it regularly; ideally every day. That might not always be practical for busy people on the go, but overall, the RX450h+ manages to blend efficiency with Lexus’ signature comfort and quality.

Mercedes-Benz GLS-Class vs Lexus RX What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Mercedes-Benz GLS-Class vs Lexus RX
What's the difference?