What it is: Redesigned last year, the Audi TT comes as a four-seat coupe or two-seat soft-top roadster. Both employ a turbocharged four-cylinder engine, a dual-clutch automatic transmission and all-wheel drive. Audi also offers a higher-powered TTS coupe. Competing convertibles include the BMW Z4 and Mercedes-Benz SLC-Class while coupe alternatives range from BMW’s 2 Series to the Lexus RC 200t. New for 2017 The TT now comes standard with a backup camera and auto-dimming, power-folding side mirrors. Significant Standard Features