Mercedes-Benz GLS-Class vs Lexus GS350

What's the difference?

VS
Mercedes-Benz GLS-Class
Mercedes-Benz GLS-Class

$170,169 - $424,300

2026 price

Lexus GS350
Lexus GS350

2018 price

Summary

2026 Mercedes-Benz GLS-Class
2018 Lexus GS350
Safety Rating

Engine Type
Diesel Turbo 6, 2.9L

V6, 3.5L
Fuel Type
Diesel

Premium Unleaded Petrol
Fuel Efficiency
7.8L/100km (combined)

9.3L/100km (combined)
Seating
7

5
Dislikes
  • No ANCAP rating
  • High purchase price
  • Intrusive voice activation

  • Thirst
  • Media system
  • No Apple CarPlay/Android Auto
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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2018 Lexus GS350 Summary

Ah, yes, the Lexus GS. Toyota's luxury off-shoot had high hopes for the new big boy when I first saw it a few years ago. Not thousands-of-sales high hopes, but the company thought a rear-wheel drive luxury sedan stacked with gear you didn't even know you wanted would be a dead-set winner.

And to be fair, they were right. I ran a GS as a long-termer and it was impeccably-mannered. In hybrid form. It wasn't sparkling, but my goodness, it used barely any fuel; especially impressive given its size.

As the sun is surely setting on the GS, it's time to have a look and see if it's a match for the BMW 5 Series or the Mercedes E.

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Deep dive comparison

2026 Mercedes-Benz GLS-Class 2018 Lexus GS350

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