Mercedes-Benz Gls450 vs Toyota Prius

What's the difference?

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Mercedes-Benz Gls450
Mercedes-Benz Gls450

$170,169 - $191,200

2026 price

Toyota Prius
Toyota Prius

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2021 price

Summary

2026 Mercedes-Benz Gls450
2021 Toyota Prius
Safety Rating

Engine Type
Diesel Turbo 6, 2.9L

Inline 4, 1.8L
Fuel Type
Diesel

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

3.4L/100km (combined)
Seating
7

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

  • Polarising exterior
  • Dorky central instrument cluster
  • Not so engaging to drive
2026 Mercedes-Benz Gls450 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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2021 Toyota Prius Summary

What to say about the Toyota Prius in 2021? A car that was once a technology trailblazer seems now to have become properly retro, even while it’s still being built and sold.

The awkward-looking wedge, an eco-punk icon, not only brought Toyota’s hybrid synergy drive to the masses, it also debuted the brand’s excellent TNGA architecture and set the scene for the company's absurd hybrid success, which now sees the RAV4 version topping the sales charts.

So, after all these years (25 to be precise), is the Prius’s time finally over? Or does this quaint hybrid hero still have more to offer? I took a top-spec I-Tech for a week to find out.

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Deep dive comparison

2026 Mercedes-Benz Gls450 2021 Toyota Prius

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