2020 Ford Mustang
Sixth generation · S550 2015–2023
The S550, the first Mustang with independent rear suspension as standard, built 2015–2023.
The 2020 model year
Overview
The performance high-water mark of the generation. The Shelby GT500 arrived with a 5.2 L supercharged "Predator" V8 making 760 horsepower — the most powerful street-legal Ford and the most powerful production Mustang ever to that point — paired exclusively with a 7-speed Tremec dual-clutch transmission. Below it, the 2.3 L EcoBoost gained a High Performance Package (a 330 hp turbo borrowed in part from the Focus RS). This was also the final year for the Bullitt and for the GT350 / GT350R.
Specifications
- Engines
-
- 2.3 L EcoBoost turbo I4 (base) 310 hp
- 2.3 L EcoBoost High Performance Package (new) 330 hp
- 5.0 L "Coyote" V8 (GT) 460 hp
- 5.0 L V8 (Bullitt; final year) 480 hp
- 5.2 L "Voodoo" flat-plane V8 (Shelby GT350 / GT350R; final year) 526 hp
- 5.2 L supercharged "Predator" V8 (Shelby GT500) 760 hp
- Transmissions
- 6-speed manual (Getrag MT82), 10-speed automatic (10R80), Bullitt / GT350: 6-speed manual only, Shelby GT500: 7-speed dual-clutch (Tremec TR-9070) only
- Body styles
- Fastback coupe, Convertible
- Base price
- $26,670 (EcoBoost fastback) ≈$32,300 today (inflation-adjusted) Original MSRP adjusted for inflation (CPI, 2024); not the car's current market/collector value. Source: U.S. Bureau of Labor Statistics, CPI-U (U.S. city average, all items), annual average.
- Production
- 61,090 (US)
Year over year
What changed
- Shelby GT500 launched — 5.2 L supercharged "Predator" V8, 760 hp, the most powerful street Mustang to that point.
- GT500 used a 7-speed Tremec dual-clutch transmission (no manual offered).
- EcoBoost High Performance Package added (330 hp turbo-four).
- Final year for the Bullitt and for the Shelby GT350 / GT350R.
Living with it
Reliability & ownership notes
- The GT500's dual-clutch transmission and supercharged Predator are high-output hardware — these are best bought with full service history; track-used cars warrant extra scrutiny.
- The EcoBoost HPP turbo is a stouter unit than the standard 2.3.
Worth knowing
Notable
- Most powerful production Mustang ever at launch (760 hp GT500).
- Last year of the naturally aspirated flat-plane GT350 / GT350R and of the Bullitt — a landmark sign-off year for collectors.
Famous variants this year
Sources
Other Sixth generation years
Explore the S550 generation → All Sixth generation · S550 years →