Top 10 best convertibles and cabrios 2020

There’s now a new Spyder version, too, which, for the first time since the nameplate emerged, has been engineered by Porsche’s GT division at Weissach. It’s practically identical to the new Cayman GT4 underneath and returns with a 414bhp flat six engine and a manual gearbox. Rest assured, the Boxster is now back on top of the pile, and by a considerable margin.

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2. BMW Z4

BMW's sixth-generation convertible Z car, the new Z4, combines usability, convenience, strong performance, good cruising manners and an engaging drive.

The Z4 range comprises the 194bhp sDrive20i and the 255bhp sDrive30i, which are both powered by 2.0-litre turbocharged petrol motors, and the 335bhp turbocharged six-cylinder M40i. We’ve tried a version of the car at either end of the derivative spectrum and have been impressed by the dynamic roundedness, polish and refinement of both.

The M40i is particularly compelling. It might lack the finesse and supreme poise of the Porsche 718 Boxster, but its hairy-chested sense of character and impressive engine make it a more attractive option than some of the lower-order 718s - S, GTS and Spyder models aside.

That said, the Z4’s impression of a small, lightweight open-top sports car like the Lotus Elise is still a bit unconvincing. Its handling is precise and fairly compelling, but it trades a little bit of agility for ride comfort and big-car cruising feel.

But as a two-seat convertible to use all year round and still really enjoy driving in keener moments, there’s a lot to like about the Z4’s engines, rear-driven chassis and distinctive character.

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3. Audi TT Roadster

From a modest 194bhp 2.0-litre petrol engine all the way up to a barnstorming 395bhp 2.5-litre unit and offering both front- and four-wheel drive, the Audi TT Roadster can be as powerful or as sensible as your budget will allow. It’s not quite as engaging or agile-handling as the 718 Boxster, because its steering can feel remote at times and its handling balance is a little straight-laced, but it’s still a capable, spirited steer – and it looks the part, too.

The TT’s wider engine range isn’t what it used to be. You could once have it with a diesel engine or a more economical 1.8-litre petrol if you wanted to combine open-top motoring with more reasonable fuel bills, but neither is a feature of the model range any longer.

A word of caution, though: by opting for the roadster over the coupé, you’ll do away with the TT’s small but still useful occasional rear seats. You wouldn’t think you’d miss them, but you might be surprised.

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4. Mercedes E-Class Cabriolet

Next to the Porsche and the Audi, the four-seat Mercedes E-Class Cabriolet is definitely more of a practical cruising machine than something to thread down your favourite stretch of British B-road. But when it comes to cruising, it excels. Air suspension (standard on AMG Line cars) provides a supple and comfortable ride and the quality of materials inside is truly excellent.

A selection of four-cylinder diesel and petrol engines provides amicable pace, but the choice of larger units on offer has now expanded to include a six-pot in the E450, a torquey six-cylinder diesel in the E400d and a performance-oriented E53 4Matic+ mild hybrid with a dusting of AMG driver appeal. Few open-top options offer as much variety of choice.

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5. Mini Convertible

Although we’re yet to drive the facelifted Mini Convertible in the UK, the original model impressed us through its ability to provide genuine open-top driving thrills without compromising ride, handling or on-road manners.

For the most part, it holds its own against its hard-top range-mate as far as dynamism is concerned, which is no mean feat in the convertible supermini class. That it exudes charm and is decently sprightly in Cooper S guise are further feathers to Mini's cap. The Mini Convertible is a touch pricey, mind, especially once you start delving into the options list.

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6. BMW 4 Series Convertible

Although the convertible version of the BMW 4 Series loses out on some of the coupé’s sleek visual appeal, it remains an impressive driving machine. As is common in this class, a range of petrol and diesel four-cylinder powerplants represents the bulk of this model’s engine line-up, but there are in-line six-cylinder offerings, too. The 332bhp turbocharged 3.0-litre six-pot in the 440i is the peachiest offering for keener drivers, although if you’re still willing to contemplate such a thing, the diesel-powered 435d xDrive has no shortage of performance or driver appeal.

Both headline engines provide the drop-top 4 Series with real pace and accessible torque, and the 440i sounds great, too. That the car also comes with proper rear seats will make a difference to its daily usability, while many buyers will also be attracted to the increased sense of security that comes with a folding metal roof.

However, with a new 3 Series having been launched in 2019, this generation of 4 Series won’t be around for much longer. A new model has already been spotted testing at the Nürburgring and is expected to arrive later this year. We’ll let you know what we think of it as soon as we driven it.

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7. Audi A5 Cabriolet

This handsome and refined convertible isn’t the sort of car with handling that’s going to keep a Porsche 718 Boxster buyer up at night, but it counters with scores of its own that should make it worth considering for plenty of drop-top regulars.

Where the 718 Boxster champions handling engagement and dynamism, the Audi A5 Cabriolet is a much more laid-back option that places long-legged refinement and ease of use over any outright driver focus. But that’s okay, because people buy different convertibles for different reasons.

It’s not quite as rewarding to drive as the BMW 4 Series Convertible in the handling department but, being an Audi, it comes with plenty of first-class on-board technology, restrained design appeal, a top-notch interior and the option of four-wheel drive and a powerful turbocharged petrol V6.

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8. Mercedes C-Class Cabriolet

Following the demise of the CLK, this is the first Mercedes cabriolet to wear a C-Class badge on its tail. Quite a handsome-looking thing, isn’t it? That it’s also one of the most luxuriously appointed and materially rich convertibles in its immediate class only adds to its appeal.

Power is provided by everything from a humble four-cylinder diesel in the C220d all the way up to the 4.0-litre twin-turbocharged petrol V8 in the Mercedes-AMG C63 S. We’ve tested both, and while they certainly are entirely different beasts, both were looked on favourably; the diesel for its rare combination of comfort, efficiency and class, the V8 for its raw power and unexpectedly hardcore, bristling performance temperament.

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