Lexus IS vs Genesis G80
What's the difference?

Lexus IS

$39,990 - $62,990

2021 price

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Genesis G80

$104,128 - $156,418

2026 price

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Maserati Quattroporte

Mazda 2

Mazda 6

Mercedes-Benz A-Class

Mercedes-Benz A35

Mercedes-Benz AMG GT

Mercedes-Benz C-Class

Mercedes-Benz C43

Mercedes-Benz C63

Mercedes-Benz CLA

Mercedes-Benz CLA-Class

Mercedes-Benz CLS-Class

Mercedes-Benz E-Class

Mercedes-Benz E53

Mercedes-Benz EQS

Mercedes-Benz GLC-Class

Mercedes-Benz S-Class

Summary

2021 Lexus IS

2026 Genesis G80

By Tom White

By Byron Mathioudakis

Safety Rating

Engine Type

Inline 4, 2.5L

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Fuel Type

Premium Unleaded/Electric

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Fuel Efficiency

4.9L/100km (combined)

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Seating

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Likes

Sleek and efficient hybrid drive
Graceful ride
Spec improvements

Size and presence
Spacious, luxurious & comfy cabin
Commanding dynamics

Dislikes

Slow
Busy interior design
Fiddly and over-complicated software

Thirsty V6 (hybrid would be nice)
Not as sporty as SL name implies - but not bad
Not as luxurious as SL name implies - but not bad

2021 Lexus IS Summary

One question frequently discussed in the skunkworks of the CarsGuide office is: What exactly does Lexus stand for?

When the brand debuted its original export-market IS sedan in 1999 the messaging was more or less clear: Toyota’s premium sub-brand was here to be a Japanese BMW.

The brand even employed Nobuaki Katayama – chief engineer on the iconic Corolla AE86 program – to again take the reins of its small rear-wheel drive sedan program.

As the years went on though, Lexus changed. Fundamentally geared toward the US market, the second-generation (wild IS F aside) became a bit more sedate and softer around the edges, while the third generation strayed even further from the sedan’s performance-inspired roots, leaning into a plush interior, hybrid drive, and even CVT transmissions.

This brings us to today’s Lexus IS. Essentially a heavy facelift of the third generation (which arrived back in 2013), the brand has “reimagined” its core sedan with a tweaked design and updated technology for 2021.

Is it enough to keep it relevant against its ever-present European rivals and the newly arrived threat from Hyundai’s Genesis G70? I took a signature IS300h hybrid for a week to find out.

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2026 Genesis G80 Summary

Remember those extra-long Australian luxury sedans like the Ford Fairlane and Holden Statesman/Caprice?

The patriotic choice in an era where that mattered and further protected by tariffs on imports that made them barely any more expensive than a base mid-sized Euro like a BMW 318i, they dominated the top end of the market with their sheer size outside, vast space inside and big-six or V8 grunt.

Like they used to say, there is no substitute for cubic inches.

Well, the spirit of these beloved local social-climbing classics lives on in just one modern car in 2025, the Genesis G80. Over three generations since 2008, it has been Hyundai’s tilt at the premium establishment, in much the same way as the Fairlane and Caprice were, and Toyota’s Lexus luxury brand still is.

We take a dive into the latest petrol-powered range-topper version, the 3.5T All-Wheel Drive (AWD) Sport Luxury (SL), which gives off more than its fair share of vintage HSV Grange vibes.

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Deep dive comparison

2021 Lexus IS 2026 Genesis G80

Verdict

Smooth, cosy, quiet, the IS looks and feels better than ever, but without a doubt this hybrid version is a car best suited to cruising the dense metropolis of Chiba at midnight more than it is carving up a bunch of S-bends in the Australian countryside on the weekend.

While that might still limit its appeal for fans of German sports luxury sedans and place it further from the original IS’s ambitions, it does offer an intriguing efficiency and luxury focused alternative, without the compromises brought by rivals with more sporting intent. In a way then, the IS 300h perhaps inadvertently best embodies what Lexus is as a brand.

Verdict

Overall, then, the flagship G80 tries to be docile Clark Kent and the amazing Superman in one. As such, it stretches itself trying to be both a luxury GT and high-functioning sports sedan.

But while it doesn’t quite achieve either perfectly the Genesis gets near enough for most – especially at its exceptional price point.

Lexus IS vs Genesis G80 What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Lexus IS vs Genesis G80
What's the difference?