Ford Fiesta — MPG & Fuel Costs 2025
Britain's best-selling small hatchback for decades. Available in petrol and diesel, with real-world economy typically 47–50 MPG for the 1.0 EcoBoost.
The Ford Fiesta remains a benchmark for the supermini class in the UK, combining engaging handling with highly efficient powertrains. Its compact size makes it a perfect city car, while its chassis is comfortable enough for longer motorway commutes.
Under the bonnet, the 1.0-litre EcoBoost three-cylinder petrol engine dominates the range, utilizing mild-hybrid (mHEV) technology in newer models to recoup energy under braking. For high-mileage drivers, the older 1.5-litre TDCi diesel offers exceptional motorway cruising economy.
Whether you are driving a classic EcoBoost or a newer mHEV, the Fiesta rewards smooth driving inputs. By using the standard gearshift indicator and planning ahead, achieving close to 50 MPG in daily driving is easily achievable.
TL;DR
47 MPG
Real-world petrol
63 MPG
Real-world diesel
42L
Tank capacity
£57.46
Full tank (petrol)
13.2p
Per mile (petrol)
Real-World Fuel Economy: The Ford Fiesta achieves an estimated 47 MPG (petrol) and 63 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 42-litre tank completely costs approximately £57.46 (petrol) or £59.68 (diesel) at average UK fuel price rates.
Fuel economy at a glance
47
Real-world MPG
Petrol
55.4
Official WLTP
Petrol
63
Real-world MPG
Diesel
74.3
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £662 | £513 |
| 7,400 miles/yr(UK average) | £979 | £759 |
| 10,000 miles/yr | £1323 | £1025 |
| 15,000 miles/yr | £1985 | £1538 |
| 20,000 miles/yr | £2646 | £2051 |
| Full tank (42L) | £57.46 | £59.68 |
| Cost per mile | 13.2p | 10.3p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Fiesta compare?
Tips to get better MPG from your Fiesta
Keep the EcoBoost engine in its sweet spot between 1,500 and 2,500 RPM for optimal turbo efficiency.
Use the selectable Eco mode to temper throttle response and save fuel on urban journeys.
Check tyre pressure regularly — Fiesta handling and fuel consumption are highly sensitive to tyre inflation.
Is the cheaper petrol station worth it?
In a Ford Fiesta achieving ~47 MPG real-world, if you fill 34 litres and the alternative station is 10p/litre cheaper:
£3.40
Gross saving on fuel
£0.40
Cost of 3-mile detour
£3.00
Net saving ✓
You could drive up to 26 miles round-trip before the saving disappears entirely.
Calculate for your exact situationPopular variants
Frequently asked questions
What is the real-world MPG of the Ford Fiesta?
The Ford Fiesta achieves approximately 47 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 55.4 MPG due to real driving conditions. Diesel variants achieve around 63 MPG real-world.
How much does it cost to fill a Ford Fiesta?
The Ford Fiesta has a fuel tank of 42 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £57.46. Diesel costs approximately £59.68 for a full tank.
What is the annual fuel cost for a Ford Fiesta?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Ford Fiesta costs approximately £979 per year in fuel. At 10,000 miles/year the cost rises to £1323. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Ford Fiesta?
In a Ford Fiesta doing ~47 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 34-litre fill nets approximately £3.00 after the extra fuel cost. You could drive up to 26 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Ford Fiesta cost per mile in fuel?
The Ford Fiesta costs approximately 13.2p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £3.96 per day in fuel.
What is the WLTP MPG figure for the Ford Fiesta?
The official WLTP fuel economy figure for the Ford Fiesta is 55.4 MPG. However, real-world MPG is typically 10–15% lower than WLTP due to cold starts, air conditioning, motorway speeds, and varying loads. WorthThePump uses a 12% real-world penalty to give a more accurate estimate.
Related guides
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