Like its predecessor, the 8S Audi TT was previewed in the form of the Audi Allroad Shooting Brake concept car, shown at the Detroit Motor Show in 2014.

Audi revealed the third generation TT at the Geneva Motor Show 2014. This model uses the Volkswagen Group MQB platform, and is available with a choice of TFSI and TDI engines. The 2.0 TFSI is available in two versions: a version producing 169 kW (230 hp) & 370 Nm (272.90 lb-ft) of torque in the TT and 228 kW (310 hp) & 380 Nm (280.27 lb-ft) of torque in the TTS. A 2.0 TDI producing 135 kW (184 hp) and 380 Nm (280.27 lb-ft) of torque is also available as an option for the TT. The TFSI engines are available with quattro all wheel drive. The TDI comes in front wheel drive configuration. The 2017 TT RS made a global debut at the Beijing Motor Show in April 2016.

The interior of the third generation Audi TT is notable for its HVAC design, featuring temperature and airflow controls that are embedded in the air-vents themselves, hence improving ergonomics.