Mercedes-Benz Gls450 vs Lexus LS500H

What's the difference?

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.

Almost 30 years after Lexus launched its original LS flagship sedan, the fifth generation of the car has arrived in Australia in what appears to be the brand’s never-ending battle to hunt down and beat Mercedes-Benz, BMW and Audi at their own game.

In some markets it looks as though Lexus is making headway. In the United States last year Mercedes-Benz was the best-selling luxury brand, followed by BMW and then Lexus. To give you even more insight, 50 per cent of all Lexus sales globally are in the US.

The story is different in Australia, with Lexus hardly a threat to the big three Germans, selling about a third less each month.

The Lexus LS is the Japanese prestige brand’s flagship and comes with a price that nudges up against formidable rivals. There’s the Mercedes-Benz S-Class, BMW 7 Series and Audi’s A8. Only the best cars from a few of the best brands in the world – no pressure, Lexus.

This may even be a reason to buy one – in that it’s not one of the traditional three. You could see Lexus as the popular underdog that in some ways does a better job than the usual suspects. A people’s favourite perhaps?

Just look at how often it’s mentioned in songs. According to lyrics.com.au the word Lexus has been used in 873 songs. Meanwhile Mercedes Benz appears in 500, Audi in 402 and BMW in 307.

With all this in mind we headed to the Australian launch to drive the LS 500 and its hybrid twin the 500h.