Convertibles with the Best Gas Mileage

Convertibles are sporty cars, but that doesn’t mean you have to pay more for fuel. If you’re on the hunt for a convertible that has great fuel economy and is still fun to drive, here’s what you need to know.

Five Cylinders or Less

Smaller engines use less gas and fortunately, there are a lot of convertibles with engines that get good fuel economy. The Mini Cooper Convertible seats four people and gets up to 27/35 mpg city/highway with its base 121-horsepower four-cylinder engine and either the manual or automatic transmission. Plus, reviewers say it’s fun to drive. If you want a small convertible that’s great for city driving and has good gas mileage, the Fiat 500 Cabrio is also a good option. The 500 Cabrio has gas mileage ratings of 27/34 mpg with its four-cylinder engine and automatic transmission.

If you are looking for a larger model, check out midsize convertibles like the Audi A5 Cabriolet, Chrysler 200 Convertible and Volkswagen Eos. The A5 Cabriolet and Eos get an EPA-estimated fuel economy rating of 24/31 mpg and 22/30 mpg, respectively. The Chrysler 200’s fuel economy is estimated at 18/27 mpg with the base four-cylinder engine.

Keep in mind that many convertibles require or recommend premium fuel, which adds significantly to their fuel costs. However, there are a few models that take regular fuel, including the Chrysler 200.

Five Cylinders or Less: EPA Fuel Economy Ratings

Fuel Type

MPG city/highway

Annual Fuel Cost

(automatic)

MPG city/highway

Annual Fuel Cost

(manual)

Mini Cooper Convertible

Premium

27/35 mpg

$1,850

27/35 mpg

$1,850

Mazda MX-5 Miata

Premium

21/28 mpg

$2,400

21/28 mpg

$2,200

BMW Z4 sDrive28i

Premium

22/33 mpg

$2,100

22/34 mpg

$2,100

Audi A5 Cabriolet

Premium

24/31 mpg

$2,100

N/A

Volvo C70

Regular

19/28 mpg

$2,300

N/A

Volkswagen Beetle TDI Convertible

Diesel

28/41 mpg

$1,850

N/A

Six Cylinders

If you want more power, check out convertibles with bigger engines. Just know that the bigger the engine, the more gas it will likely use. The Porsche Boxster is a luxury performance convertible that offers some of the best city and highway fuel economy ratings among six-cylinder engine convertibles. The Boxster has a fuel economy rating of 22/32 mpg with a six-cylinder engine and an automatic transmission. Even though the Boxster requires premium gas, it still has a better estimated annual fuel cost than the Chevrolet Camaro and Ford Mustang by $200 and $100, respectively.

The Mercedes-Benz SLK350 Roadster is another luxury convertible, and its fuel economy ratings are also impressive. It gets 21/29 mpg with a V6 and an automatic transmission.

Six Cylinders: EPA Fuel Economy Ratings

Fuel Type

MPG city/highway

Annual Fuel Cost

(automatic)

MPG city/highway

Annual Fuel Cost

(manual)

Ford Mustang Convertible

Regular

19/30 mpg

$2,200

N/A

Chevrolet Camaro Convertible

Regular

19/30 mpg

$2,300

17/28 mpg

$2,500

Chrysler 200 Convertible  

Regular

19/29 mpg

$2,300

N/A

Nissan 370Z Roadster

Premium

18/25 mpg

  $2,600

17/24 mpg

$2,750

Infiniti G37 Convertible

Premium

17/25 mpg

$2,750

16/24 mpg

$2,900

BMW 135i Convertible

Premium

18/25 mpg

$2,750

19/28 mpg

$2,500

Mercedes-Benz SLK350 Roadster

Premium

21/29 mpg

$2,300

N/A

Eight Cylinders

Convertibles with eight-cylinder engines don’t get great gas mileage, but some people want a convertible equipped with one of these engines because their power is impressive. If it’s V8 or bust for you, the Mercedes-Benz SLK55 AMG Roadster gets some of the best fuel economy ratings for a V8-powered convertible. With an automatic transmission, you can get up to 19/28 mpg city/highway with its V8 engine. Even though the SLK55 AMG Roadster requires premium fuel, according to the EPA, it still has a lower estimated annual fuel cost versus other V8 convertibles that use regular gas. The Chevrolet Corvette Convertible’s EPA-estimated 16/26 mpg fuel economy ratings are pretty good for a car with a 430-horsepower V8 engine.

Eight Cylinders: EPA Fuel Economy Ratings

Fuel Type

MPG city/highway

Annual Fuel Cost

(automatic)

MPG city/highway

Annual Fuel Cost

(manual)

Chevrolet Camaro SS Convertible

Regular

15/24 mpg

$2,800

16/24 mpg

$2,650

Mercedes-Benz E550 Cabriolet

Premium

16/25 mpg

$2,900

N/A

BMW 650i Convertible

Premium

17/25 mpg

$2,900

N/A

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