The Fox is a 1.0 liter, turbocharged three-cylinder engine from Ford Motor used to power subcompact cars and utility vehicles, or more commonly known as CUVs. Featuring a dual overhead cam (DOHC) design, in an inline configuration, the Ford Fox architecture has been part of the Ford EcoBoost family of turbocharged engines since 2012.
The Ford 1.0L EcoBoost Fox engine received important updates in 2017. Although thermodynamically similar to its predecessor, it was entirely reconfigured to integrate a new cylinder deactivation system for improved efficiency. A dual-mass flywheel and a vibration-damping clutch disc were also added to quell engine oscillations when running on two cylinders. Offered in two different variations, with different power ratings, the Ford 1.0L EcoBoost Fox engine was awarded the International Engine of Year twice. It powers the following vehicles.
- Ford Fiesta
- Ford Focus (European market)
- Ford EcoSport
Overview
| Metric | Value |
|---|---|
| Engine family | EcoBoost |
| Displacement | 1.0 liter |
| Aspiration | Turbo |
| Configuration & cylinders | Inline, three cylinders |
| Vehicle engine orientation | Transverse |
| Valve configuration | Dual overhead cam (DOHC) with variable camshaft timing (VCT) |
| Assembly sites | Cologne, Germany, Craiova, Romania, and Chongqing, China |
| Predecessor | Ford Sigma engine |
| Successor | Currently none |
Specifications
| Metric | Value |
|---|---|
| Bore | 71.9 mm |
| Stroke | 82 mm |
| Compression ratio | 10.0:1 |
| Max power @ RPM | 125 @ 6,000 rpm |
| Max torque @ RPM | 170 lb-ft @ 1,400 rpm (up to 200 lb-ft with transient overboost) |
| Cylinder head | Cast aluminum |
| Cylinder block | Cast iron |
| Camshaft drive | Belt |
Vehicle Applications
| Vehicle | Transmission | Drive Wheels | Power @ RPM | Torque (lb-ft) @ RPM |
|---|---|---|---|---|
| Ford EcoSport | Six-speed automatic / Six-speed manual | FWD / AWD | 123 @ 6,000 | 125 @ 6,000 |
| Ford Fiesta | Six-speed automatic / Six-speed manual | FWD | 99 @ 6,000 rpm / 123 @ 6,000 | 125 @ 6,000 |
| Ford Focus | Six-speed automatic / Six-speed manual | FWD | 99 @ 6,000 / 123 @ 6,000 | 125 @ 6,000 |
Discussion
Discuss the Ford 1.0L EcoBoost Fox engine in our Ford forum.
News
Subscribe to Ford Authority for the latest Ford Fox engine news, Ford EcoBoost news, Ford engine news, and ongoing Ford news coverage.
