Genesis G80 vs Kia Optima
What's the difference?

Genesis G80

$104,128 - $156,418

2026 price

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Kia Optima

$14,670 - $22,990

2018 price

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Maserati Quattroporte

Mazda 6

Mercedes-AMG E63

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 S-Class

Rolls-Royce Spectre (bev)

Summary

2026 Genesis G80

2018 Kia Optima

By Byron Mathioudakis

By Matt Campbell

Safety Rating

Engine Type

—

Inline 4, 2.4L

Fuel Type

—

Unleaded Petrol

Fuel Efficiency

—

8.3L/100km (combined)

Seating

—

Likes

Size and presence
Spacious, luxurious & comfy cabin
Commanding dynamics

Very roomy
Great ownership plan
Decent price

Dislikes

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

Removed some good stuff to lower price
Not as good looking as pre-facelift model
A bit basic inside

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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2018 Kia Optima Summary

There are plenty of reasons why you should still consider a mid-sized sedan like the Kia Optima. I’m sure there are… just let me think about this for a sec…

Okay, so this part of the market is dying. A decade ago, sedans like this were really popular, but now there are heaps of alternative options. Yep, people are going for mid-sized SUVs rather than mid-sized sedans like this.

But that doesn’t mean models like the just-updated 2018 Kia Optima are without their reasons for being. I’m just not sure the facelift has made it more appealing to look at…

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Deep dive comparison

2026 Genesis G80 2018 Kia Optima

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.

Verdict

If you travel long distances, want a good amount of space and don’t want to pay big bucks for a new car, then yeah, maybe there is a reason sedans like this will hang around for a while longer.

Sure, the appeal of sedans mightn’t be as strong as it once was, but models like the Kia Optima prove they still have a reason to exist.

Genesis G80 vs Kia Optima What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Genesis G80 vs Kia Optima
What's the difference?