Mercedes-Benz GLA-Class vs Porsche Cayenne
What's the difference?

Mercedes-Benz GLA-Class

$29,999 - $67,868

2021 price

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Porsche Cayenne

$144,900 - $376,200

2026 price

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Summary

2021 Mercedes-Benz GLA-Class

2026 Porsche Cayenne

By Byron Mathioudakis

By Stephen Ottley

Safety Rating

Engine Type

Turbo 4, 2.0L

Electric motor type

—

Fuel Type

Premium Unleaded Petrol

Vehicle type

—

Fuel Efficiency

7.5L/100km (combined)

Electric range

—

Energy consumption

—

Battery capacity

—

Seating

Likes

Lovely design inside and out
Terrifically planted and safe
Evocative, flexible performance

Immense performance
Surprisingly capable off-road
Thoughtful cabin design

Dislikes

Full suite of safety costs extra
Some quality lapses inside
Ride still unsettled even on optional adaptive dampers

No new petrol or hybrid variant (yet)
Coupe bodystyle loses practicality
Off-road bodykit looks awkward

2021 Mercedes-Benz GLA-Class Summary

ONE of the great motoring successes of the past decade has been the Mercedes-Benz GLA, catapulting the brand to unparalleled prominence in the premium small SUV field and kicking off the posh little coupe-hatch crossover craze.

Cynics might say that it is essentially a jumped-up A-Class hatchback, much like the Subaru XV is basically an Impreza in stilettos. But while the small German crossover is built on the same MFA2 platform as its smaller transverse-engined Benz brethren, no body panels are shared, granting it a distinct look and personality. Unlike the little Suby…

The H247-series GLA launched in Australia in 2020 is second-generation, featuring a longer wheelbase and appreciably more space, but a shorter overall length than the popular original from 2013. It's also substantially taller.

Here we take a long, hard look at the bestselling GLA 250 4Matic.

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2026 Porsche Cayenne Summary

No good deed goes unpunished.

Porsche, a brand synonymous with petrol-guzzling sports cars, tried to do the right thing and make a nearly wholesale switch to electric vehicles by the end of the decade. The problem was, while this made governments happy, it didn’t sit well with customers.

Porsche’s all-electric Macan is enduring a torrid 2026, with sales down over 75 per cent now that all the petrol-engined options are gone.

But that hasn’t stopped the German brand trying again with an all-electric Cayenne. However, there are some key differences that mean this latest electric Porsche won’t suffer the same fate.

Namely, the petrol-powered and hybrid versions aren’t going anywhere and new versions are rumoured to be coming in the not-too-distant future.

For now though, we have this all-new electric Cayenne - so how does it stack up to its predecessors as the sports car brand’s big SUV? And will it be second time lucky for Porsche’s electric transition? Based on two rather unorthodox days of test driving, the verdict might surprise you…

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Deep dive comparison

2021 Mercedes-Benz GLA-Class 2026 Porsche Cayenne

Verdict

With Mercedes-Benz’s vast number of SUVs, there is room for an urban luxury crossover niche, and the GLA delivers in spades.

Indeed, in 250 4Matic guise, it is that rare thing – a high-riding hatch with dynamics to shame most dedicated pocket-rockets. It really is a hoot if you find the right road, regardless of weather conditions. The Benz has towering talent.

However, even without desirable options like adaptive dampers and a full suite of driver-assist safety technology, the GLA is expensive, does not quite carry off the price tag from an interior quality point of view, and struggles to maintain the degree of comfort and refinement expected from a Mercedes – with or without the $3K necessary to score adaptive dampers.

Still, especially because of the way the GLA looks, goes, stops and steers, if you can afford it, you’ll be rewarded. There’s never been a more rounded GLA.

Verdict

There is a lot riding on this new Cayenne Electric, it is the sales leader for the German brand and if it suffers the same sales decline as the Macan, that will be a big concern for Porsche.

The good news is it’s an impressive all-rounder, with an incredible breadth of capability. But so is the electric Macan.

Going electric hasn’t diminished its trademark Porsche elements, and instead has amplified them in many respects. The speed is nothing short of staggering in the Turbo, but across the range the on and off-road driving ability is impressive.

Plus it has the kind of spacious, well-considered and premium appointed cabin you should expect for a luxury SUV.

There are two key differences that could see it succeed where the Macan has faltered. Unlike the Macan, Porsche’s decision to give Cayenne buyers the option to stick with internal combustion if they prefer, is likely to ensure it remains a popular member of its line-up for years to come.

And while the Macan was perhaps too much, too soon, the Cayenne arrives at a time when Australians are embracing electric cars more than ever before. Although the luxury and performance end of the EV market is growing more slowly than the mainstream.

As for the pick of the range, as mind-blowing as the Turbo is, the truth is (like pretty much every Porsche model) the entry-level Cayenne is arguably the pick of the bunch. It has all the performance you’ll reasonably need and offers a good blend of capability and luxury for the lowest price.

Note: CarsGuide attended this event as a guest of the manufacturer with travel, accommodation and meals provided.

Mercedes-Benz GLA-Class vs Porsche Cayenne What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

Mercedes-Benz GLA-Class vs Porsche Cayenne
What's the difference?