Skip advert
Advertisement

BMW Z4 vs rivals

We brave the elements to see if the new BMW Z4 can take the roadster crown from Porsche and Mercedes

Folding metal hard-tops claim to provide the best of both worlds – marrying cruising refinement with open-air thrills. But does the new BMW Z4 deliver on this promise?

The two-seater has a hi-tech aluminium roof in place of its predecessor’s fabric design. It’s also bigger and softer than the model it replaces, as the brand has given its sporty roadster an extra dose of sophistication. The car that BMW used as a benchmark when developing the Z4 was the Mercedes SLK.

Advertisement - Article continues below

Video: watch CarBuyer's video review of the BMW Z4

[[{"type":"media","view_mode":"content_narrow","fid":"68419","attributes":{"alt":"","class":"media-image"}}]]

Now in its second generation, this is the model that started the folding hard-top craze. A recent round of tweaks has improved its looks and sharpened the dynamics, but while the four-cylinder SLK 200 matches our BMW on price, it falls short on pace. So, we’ve given the Z4 a tougher test by pitching it against the more expensive SLK 280.

Refinement and sophistication are all very well, but a roadster should also be great to drive – and few drop-tops are as engaging as Porsche’s Boxster. It’s £5,054 more than the Z4, but with a powerful new engine and subtle facelift, the mid-engined machine is at the top of its game. Has the new BMW got what it takes to steal victory, or will the newcomer lose its head?

Verdict

When BMW developed the Z4, it had one target: the SLK. The Mercedes is a great benchmark, combining coupé comfort and security with wind-in-the-hair roadster thrills. It also serves up refinement and elegant looks, and has a desirable badge. Ignore the breathless entry-level four-cylinder model, and the SLK even provides genuine sports car pace.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Ateca

2025 SEAT

Ateca

24,698 milesAutomaticPetrol1.5L

Cash £18,600
View Ateca
X3

2021 BMW

X3

20,705 milesAutomaticDiesel2.0L

Cash £30,400
View X3
Polo

2027 Volkswagen

Polo

35,950 milesAutomaticPetrol1.0L

Cash £14,495
View Polo
Bentayga

2018 Bentley

Bentayga

32,250 milesAutomaticPetrol6.0L

Cash £56,995
View Bentayga

However, it can’t match the BMW here. The Z4’s folding metal roof is equally effective, while its bold looks turn even more heads. Better still, it costs less than the Merc, is sharper to drive and just as quick in a straight line. And the EfficientDynamics technology means owners can expect superb economy and low emissions.

But great roadsters need more than good looks, strong performance and wallet-friendly running costs. They should also entertain – as the Porsche does!

The mid-engined machine is totally absorbing to drive, with controls that are full of feedback. It’s also practical, and its fabric hood is as effective as its rivals’ metal designs. Superior pace and a more desirable image help the Boxster justify its price premium.

1st: Porsche boxster
With its superbly balanced chassis and perfectly weighted controls, the Boxster is a sheer delight to drive. On top of this, the 2.9-litre engine delivers strong performance, while the cabin is impressively practical. It’s pricey, but well worth it.

2nd: BMW Z4
Buyers who are in the market for a desirable and refined roadster need look no further than the Z4. The newcomer has eye-catching styling, a fantastic interior and strong engine. What’s more, in entry-level sDrive23i trim, it’s something of a bargain.

3rd: Mercedes SLK
The SLK started the folding hard-top trend, but the competition has now caught up. There’s still a lot to like about the Mercedes, including its clever roof, smart looks and cruising comfort. Yet it’s let down by its uninspiring dynamics and disappointing pace.

Skip advert
Advertisement

New & used car deals

Toyota Yaris Cross
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £7,528 off RRP*Used from £11,213
Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £6,762 off RRP*Used from £9,574
Volkswagen Tiguan

Volkswagen Tiguan

RRP £38,030Avg. savings £3,575 off RRP*Used from £11,438
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Geely Galaxy Battleship 700 is an AI-powered behemoth aiming to sink the Land Rover Defender
New Geely Galaxy Battleship - front static

New Geely Galaxy Battleship 700 is an AI-powered behemoth aiming to sink the Land Rover Defender

Auto Express has confirmed the hulking hybrid 4x4 is coming to the UK
News
25 Mar 2026
New MG4 Urban will be the UK’s first EV with semi-solid-state batteries
MG4 Urban - front cornering

New MG4 Urban will be the UK’s first EV with semi-solid-state batteries

Industry-first semi-solid-state batteries will be available from the end of this year in new MG4 Urban
News
23 Mar 2026
The Freelander returns, but it's not a Land Rover...
Freelander teaser

The Freelander returns, but it's not a Land Rover...

The Freelander name will be used for new range of electric cars, but UK sales aren’t likely for a little while yet
News
24 Mar 2026