Mercedes-Benz Gls450 vs Lexus RX300

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.

Whether or not people like the look of the models in Lexus' line-up varies, but one thing's for sure, the Japanese luxury brand has a clear  identity. The intent of occupying the rung between a mainstream brand and a prestige one is clear in the pricing, and the styling of Lexus's vechicles is akin to jewellery – just look at the intricate Spindle grille, which is particularly enormous on the RX300 Luxury I've tested in this review.

The RX300 Luxury is the entry point into the RX large SUV range, so does this mean it's missing much in the way of tech, equipment or grunt? Yes, and no. Read on to find out.