The 2018 Ford Mustang offered two main transmission choices for most trims: a six-speed manual and a 10-speed automatic. The high-performance Shelby models were manual-only for that year.
Transmission options by model
The following breakdown explains which transmissions were available across the 2018 Mustang lineup.
- EcoBoost (2.3-liter) and GT (5.0-liter) models could be ordered with either a 6-speed manual or a 10-speed automatic.
- Shelby GT350 and GT350R came with a manual-only drivetrain, using a Tremec 6-speed manual transmission.
The 10-speed automatic in the 2018 Mustang is Ford's 10R80 transmission, designed for fast, smooth shifts and versatile performance across everyday driving and track use.
What this means for driving experience
Choosing the manual offers a traditional, engaging shift feel for the EcoBoost and GT, while the 10-speed automatic provides quick gearing and improved fuel economy. For the Shelby models, enthusiasts get the pure, driver-focused manual experience without an automatic option.
Concluding: The 2018 Mustang lineup generally offered two transmissions for most buyers—6-speed manual and 10-speed automatic—with Shelby GT350/GT350R remaining manual-only.
Summary
In short, a 2018 Mustang typically had a 6-speed manual or a 10-speed automatic, with the notable exception of the Shelby GT350/GT350R, which were manual-only.