To help the automotive industry build better cars, and to help
consumers choose the right vehicle, J.D. Power annually surveys new-
and used-vehicle owners to assess what is going right and what is going
wrong with their cars, trucks, SUVs and vans. The information is
compiled into landmark studies about vehicle quality, appeal, and
dependability, and the data is used to derive ratings for and make
predictions about new and used vehicles. Among those predictions are
ratings for reliability.
Listed below are the 2013 model-year convertibles that J.D. Power
expects will be the most reliable over time. They are listed in
alphabetical order.

The Camaro Convertible lineup expands for 2013, thanks to the addition
of a high-performance Camaro ZL1 that slots in above the standard LT
and speedy SS variants. The Camaro Convertible is also offered with a
new touch-screen MyLink infotainment system, new wheels and colors, and
other upgrades for 2013.

A new Corvette 427 Convertible debuts for 2013, which is the current
model's final year of production in advance of the
2014
Corvette Stingray's arrival. Essentially a Z06 package for the
convertible model, the new 427 Convertible has a 7.0-liter V-8 engine
generating 505 horsepower. A 60th Anniversary Design package is
optional this year, along with other cosmetic enhancements.

New styling and more horsepower for the GT models helps to keep the
aging Mustang appealing for the 2013 model year. Significantly, the Shelby
GT500 is given a complete mechanical massage, and now generates 662
horsepower from what
Ford says
is "the most powerful regular production V-8 engine in the world."

A new sport-tuned version of the Infiniti G37 Convertible debuts for
2013, called the Infiniti Performance Line (IPL) G. In addition to 17
extra horsepower, the IPL
G Convertible gets revised styling as well as modifications to the
steering, suspension, braking, and exhaust systems. Next year, the G37
Convertible will be known as the Q60 Convertible.

Subtle styling changes and a racy new Club trim level summarize the
changes for the 2013 Mazda MX-5 Miata, a 2-seat, rear-drive roadster
offered with a soft convertible top or a power-retractable hardtop.

For 2013, the E350 Cabriolet and the E550 Cabriolet have redesigned
wheels, electric steering, standard heated front seats, and a new
Mbrace2 connectivity and telematics system.
Nissan
aims to lift Z roadster sales with subtle styling modifications, new
colors, and new option packaging. Otherwise, the 332-horsepower, 2-seat
sports car continues unchanged.

New
Carrera
4 and Carrera 4S models debut for 2013, and the 2013 Porsche 911
can be optioned with Porsche Active Safe technology as well as an
active cruise control system. Models equipped with the optional Sport
Chrono Pack now benefit from downshift rev matching for the manual
gearbox.

Lighter, larger inside, more powerful, and more fuel-efficient than the
2012 model, the Porsche Boxster is completely redesigned for the first
time in its long history. Boxster and Boxster S models are offered,
each equipped with two seats and a mid-mounted flat-6 engine.