For most buyers, the 1.0‑litre EcoBoost petrol is the best overall Fiesta engine, offering a compelling blend of efficiency and everyday performance. For enthusiasts, the 1.5‑litre EcoBoost in the Fiesta ST remains the standout option. This article reviews the engines Ford has used in the Fiesta and explains how to choose based on your needs, region, and budget.
Core engine options in the modern Fiesta
Ford’s current and recent Fiesta lineups center on turbocharged EcoBoost petrols, with a diesel option in some markets. Here are the engines that define the modern Fiesta range and what to expect from them.
- 1.0‑litre EcoBoost petrol (three‑cylinder) — the baseline powerplant for everyday driving, combining punchy mid‑range torque with strong fuel efficiency; typically around 100–125 PS, with torque near 170 Nm depending on spec.
- 1.5‑litre EcoBoost petrol — the larger turbocharged option used in the Fiesta ST; about 200 PS in standard form, delivering a notably sportier, punchier driving experience.
- 1.5‑litre TDCi diesel — available in some markets for those who prioritize fuel economy on longer trips; typically around 75–95 PS depending on variant, with solid highway efficiency.
- Older Duratec petrols (pre‑EcoBoost variants) — engines from earlier Fiesta generations; increasingly rare in current listings but still seen in older used cars.
These options cover most buyers: the 1.0 EcoBoost for daily use, the 1.5 EcoBoost ST for performance, and the 1.5 TDCi diesel where available for long‑haul efficiency. The older Duratec engines linger mainly in older, used examples rather than in current new‑car offerings.
Choosing the best engine for your needs
To help you decide, consider how you plan to use the car, how important fuel economy is, and whether you prioritize pace or low running costs. The following guide highlights the best engine choices for different priorities.
- Best all‑round daily driver: 1.0‑litre EcoBoost — quick enough for city and highway driving, with excellent real‑world fuel economy.
- Best for performance enthusiasts: 1.5‑litre EcoBoost (Fiesta ST) — the closest thing to a hot hatch in the small car class, with around 200 PS and sharp handling.
- Best for long‑haul efficiency: 1.5‑litre TDCi diesel (where offered) — high mpg and ample torque for relaxed cruising on highways.
- Best affordable older option: Duratec petrols from earlier generations — fewer modern refinements, but can be budget‑friendly in the used market.
When shopping used, prioritize service history, especially for EcoBoost engines, as turbocharged variants can require attentive maintenance. Consider local availability and resale value, and always test‑drive a model with the engine you’re considering to gauge refinement and feel.
Market context and availability
Note on market availability: Ford has phased out new Fiesta sales in many Western markets in favor of SUVs and crossovers, with production winding down in Europe and other regions over the late 2010s and early 2020s. In those markets, a healthy used‑car market remains the primary source for Fiesta engines. In other regions, such as parts of Asia, Latin America, or markets with different model cycles, the Fiesta can still be offered with regionally specific engine options.
Regional notes
United States: Ford no longer sells the Fiesta new in the U.S.; used examples are common, with a mix of 1.0 EcoBoost and older naturally aspirated engines. Europe and other regions continue to see EcoBoost options in the used market, with diesel variants less common as emissions standards tighten.
Bottom line: For most buyers today, the 1.0‑litre EcoBoost is the practical best choice, while the 1.5‑litre EcoBoost ST remains the performance icon. Diesel remains appealing where offered, and older Duratec engines belong to earlier generations.
Summary
The 1.0‑litre EcoBoost engine stands out as the best overall Fiesta engine for most buyers, thanks to its efficient performance balance. For those seeking real speed, the Fiesta ST’s 1.5‑litre EcoBoost delivers a compelling hot‑hatch experience. The 1.5‑litre TDCi diesel offers excellent highway economy where available, while older Duratec engines are mainly relevant only to buyers of older used cars. When choosing, weigh your daily driving needs, regional engine availability, and the condition and maintenance history of any used vehicle. Test drives and a careful review of service records are essential to confirm the engine’s suitability and reliability.