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Ford EcoBoost 1.5 specs: 91.5 ci (1.5L) 4-cylinder, 3.11 x 3.008 in (79 x 76.4 mm) bore and stroke. Rated 179 hp, 2017–2019. Used in the Ford Escape. DOHC.
The Ford EcoBoost 1.5 is close to square: 3.1102" bore against 3.0079" stroke, within 3.4%, which splits the difference between a high-revving layout and a torque layout. The 3.0079" stroke does not reach 4,000 ft/min of mean piston speed until about 8,000 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 22.9 ci (375 cc).
It is one of 32 engines in the EcoBoost family, sitting between the 61 ci and 213.4 ci members. 3 factory variants share these dimensions, rated at 179 hp across 2017–2019.
| Displacement | 91.5 ci / 1.5 L |
|---|---|
| Bore | 3.1102" |
| Stroke | 3.0079" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 1.034 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 179 hp |
| Years | 2017–2019 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2017 | net | 179 @ 6000 | 177 lb-ft @ 2500 | — |
| 2018 | net | 179 @ 6000 | 177 lb-ft @ 2500 | — |
Factory specification sheet.
| Bore/stroke character | 1.034 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,008 ft/min — conservative for a street engine |
| Displacement per cylinder | 22.9 ci |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2017 | 179 hp | EcoBoost 1.5 |
| 2018 | 179 hp | EcoBoost 1.5 |
| 2019 | 179 hp | EcoBoost 1.5 |
1 factory vehicle, 2017–2019. Each year opens that model's engine table.