2021 Ford Mustang 2.3L EcoBoost Specs
Trims: EcoBoost, EcoBoost Premium · 6th gen (S550) · Updated Sep 2026
- Horsepower
- 310 hp
- 350 lb-ft
- Curb weight
- 3,492 lb
- Oil capacity
- 6.0 qt
- with filter
- Oil type
- SAE 5W-30
- Tire size
- 235/55R17
- MPG combined
- 25 mpg
Specs #specs
The 2021 Ford Mustang 2.3L EcoBoost makes 310 hp at 5,500 rpm and 350 lb-ft of torque at 3,000 rpm. Its curb weight is 3,492 lb.
| Horsepower | 310 hp @ 5,500 rpm |
|---|---|
| Torque | 350 lb-ft @ 3,000 rpm |
| Transmission | 6-speed manual, 10-speed automatic |
| Drivetrain | RWD |
| Curb weight | 3,492 lb |
| Fuel tank | 15.5 gal |
| Width | 75.4 in |
| Wheelbase | 107.1 in |
Engine #engine
| Engine | 2.3L EcoBoost I4 |
|---|---|
| Displacement | 2.3 L |
| Cylinders | I4 |
| Aspiration | Turbocharged |
| Fuel | Gasoline |
| Compression ratio | 9.5:1 |
| Firing order | 1-3-4-2 |
Oil capacity & fluids #oil-capacity
The 2021 Ford Mustang 2.3L EcoBoost takes 6.0 quarts of SAE 5W-30 oil with a filter change.
| Engine oil (with filter) | 6.0 qt |
|---|---|
| Oil type | SAE 5W-30 |
| Coolant | 9.5 qt |
| Automatic transmission fluid (approx. dry fill) | 12.7 qt MERCON ULV |
| Manual transmission fluid | 2.7 qt |
| Brake fluid | DOT 4 LV |
Wheels & tires #tire-size
The 2021 Ford Mustang 2.3L EcoBoost comes with 235/55R17 tires. The bolt pattern is 5x114.3.
| Tire size | 235/55R17 |
|---|---|
| Wheel size | 17 in |
| Bolt pattern | 5x114.3 |
| Thread size | M14x1.5 |
| Lug nut torque | 150 lb-ft |
Fuel economy #mpg
| City | Highway | Combined | |
|---|---|---|---|
| 10-speed automatic | 21 | 32 | 25 |
| 6-speed manual | 21 | 29 | 24 |
Maintenance schedule #maintenance
| Engine oil & filter (Oil-Life Monitor, at most) | 10,000 mi / 12 mo |
|---|---|
| Cabin air filter | 20,000 mi |
| Engine air filter | 30,000 mi |
| Spark plugs | 100,000 mi |
6 recalls for the 2021 Ford Mustang →
FAQ
How much oil does a 2021 Mustang EcoBoost take?
The 2.3L EcoBoost takes 6.0 quarts of SAE 5W-30 including the oil filter.
Sources: 2021 Ford Mustang Owner's Manual (Mar 2021 printing), 2021 Ford Mustang brochure, EPA fueleconomy.gov, NHTSA recalls, Ford Performance Parts (bolt pattern), Edmunds (curb weight, dimensions, base tire sizes). Updated Sep 2026.