Most Reliable 2017 Coupes and Convertibles Over $50,000

Most Reliable 2017 Coupes and Convertibles Over $50,000

By Christian Wardlaw, August 31, 2017
  • Choosing a reliable car doesn’t require sacrifice in terms of style, driving dynamism, a coddling cabin, and the wind in your hair on a warm summer’s evening. As proof, J.D. Power offers this list of reliable coupes and convertibles priced over $50,000.

    Based on surveys of thousands of new- and used-vehicle owners, the data behind J.D. Power predicted reliability Power Circle Ratings shows that the eight models featured here, listed in alphabetical order, are likely to prove to be the most reliable high-end coupes and convertibles. Note that for nameplates that are new, J.D. Power considers the historical performance of all models from a brand in order to establish their predicted reliability.

    Keep in mind, too, that the individual ratings discussed below reflect a car’s predicted reliability in comparison to other models in the same segment, and are not accurate for cross-comparison between segments.



  • 2017 BMW 4 Series Convertible photo

    2017 BMW 4 Series Convertible

    Of the trio of 4 Series body styles, only the Convertible is base priced higher than $50,000. Equipped with seating for 4 and offered in three model series, the 430i and 440i receive new turbocharged 4-cylinder and 6-cylinder engines, respectively, for 2017. The performance-tuned M4 continues with the same power plant, but adds a standard adaptive damping suspension for the 2017 model year. Additional changes include upgraded infotainment technologies.

    The 2017 4 Series Convertible receives an overall predicted reliability Power Circle Rating of 4.5 out of 5.

  • 2017 Mercedes-AMG GT S photo

    2017 Mercedes-AMG GT

    Serving as the company’s top sports car, the Mercedes-AMG GT is a coupe available in two states of specification. The standard version is new for 2017, equipped with a less-powerful version of the hand-built, turbocharged V-8 that is employed in the GT S model, and priced from about $110,000. Don’t worry, a long list of options allows buyers to custom tailor the car. And for 2018, the lineup expands to include a new higher-performance Coupe R and a couple of roadster variants.

    The 2017 AMG GT receives an overall predicted reliability Power Circle Rating of 4 out of 5.

  • 2017 Mercedes-Benz S550 Cabriolet photo

    2017 Mercedes-Benz S-Class Cabriolet

    New for 2017, the S-Class Cabriolet is a sumptuous luxury convertible offered in S550, AMG S63, and AMG S65 model series. If you must ask the price, you cannot afford it. Based on the historical performance of Mercedes-Benz models, the S-Class Cabriolet is predicted to be reliable in spite of its laundry list of technological features.

    The 2017 S-Class Convertible receives an overall predicted reliability Power Circle Rating of 4 out of 5.

  • 2017 Mercedes-Benz SL450 photo

    2017 Mercedes-Benz SL-Class

    For a more sporting alternative to the S-Class Cabriolet, look to the smaller SL-Class roadster. The nameplate dates to the 1950s, and it has long served as the flagship Mercedes-Benz grand touring car. Modern SL roadsters have a power-retractable hardtop, and a choice of turbocharged engines with 6, 8, or 12 cylinders. Buyers can choose between the SL450, SL550, AMG SL63, and AMG SL65.

    The 2017 SL-Class receives an overall predicted reliability Power Circle Rating of 4 out of 5.

  • 2017 Mercedes-Benz SLC300 photo

    2017 Mercedes-Benz SLC-Class

    Mercedes-Benz heavily refreshes its entry-level roadster for 2017 and gives the car a new name to better align it with the company’s overall lineup. The resulting SLC-Class is improved in every way, more efficient, more sporting, more luxurious, and more technologically advanced than its predecessor. Two versions are offered: the SLC300 and the AMG SLC43.

    The 2017 SLC-Class receives an overall predicted reliability Power Circle Rating of 4 out of 5.

  • 2017 Porsche 718 Boxster photo

    2017 Porsche 718 Boxster

    Porsche performs a significant update to its 2-seat, mid-engine roadster for 2017, swapping the formerly standard 6-cylinder engine for a turbocharged 4-cylinder that changes the car’s character at the same time that it improves performance and efficiency. Styling changes and mechanical upgrades are also a part of the improvement, as is the addition of “718” to the car’s name.

    The 2017 718 Boxster receives an overall predicted reliability Power Circle Rating of 4.5 out of 5.

  • 2017 Porsche 718 Cayman photo

    2017 Porsche 718 Cayman

    Last year, before a major update that transformed the Cayman into the 718 Cayman, this mid-engine sports car was more expensive than its convertible-roofed Boxster counterpart. Now the roles are reversed, and it is the 718 Cayman that is most affordable. Like the 718 Boxster, the 718 Cayman has new turbocharged engines, reworked mechanical details, and styling updates to go with its new name and price.

    The 2017 718 Cayman receives an overall predicted reliability Power Circle Rating of 4.5 out of 5.

  • 2017 Porsche 911 Turbo S photo

    2017 Porsche 911

    New turbocharged 4-cylinder and 6-cylinder engines debut as standard equipment for 2017, and to mark the occasion Porsche has updated the 911 lineup’s styling while adding a more modern infotainment system. A range of new GTS models debuted halfway through the 2017 model year, with rear-wheel or all-wheel drive, and with a solid roof, targa roof, or a convertible roof.

    The 2017 911 receives an overall predicted reliability Power Circle Rating of 4.5 out of 5.


    Additional Research:


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