Ford Transit Custom — MPG & Fuel Costs 2025
The backbone of British business. The UK's favourite medium van, offering great loading space, durability, and respectable diesel economy.
The Ford Transit Custom is an institution on UK roads, consistently ranking among the overall best-selling vehicles in the country. It is highly regarded for its car-like drive, excellent load-carrying capability, and strong dealer network support.
Most Transit Customs are powered by versions of the 2.0-litre EcoBlue diesel engine, which is compliant with Euro 6 standards. The engines are optimized for low-end torque, making it easy to haul heavy cargo without stalling or stressing the engine.
Real-world fuel economy sits around 34 MPG for mixed usage. Fuel consumption is highly sensitive to load weight and driving style, meaning trade drivers can save hundreds of pounds a year by driving defensively and cleaning out unnecessary cargo.
TL;DR
34 MPG
Real-world diesel
70L
Tank capacity
£95.76
Full tank (petrol)
Real-World Fuel Economy: The Ford Transit Custom achieves an estimated 34 MPG in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 70-litre tank completely costs approximately £99.47 at average UK fuel price rates.
Fuel economy at a glance
34
Real-world MPG
Diesel
40.9
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Diesel |
|---|---|
| 5,000 miles/yr | £950 |
| 7,400 miles/yr(UK average) | £1406 |
| 10,000 miles/yr | £1900 |
| 15,000 miles/yr | £2850 |
| 20,000 miles/yr | £3800 |
| Full tank (70L) | £99.47 |
| Cost per mile | 19.0p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Transit Custom compare?
Tips to get better MPG from your Transit Custom
Organize and clean out cargo regularly; carrying 100kg of unused tools costs about 0.5 miles per gallon.
Drive smoothly and use the built-in EcoMode settings to limit acceleration rates and govern top speeds.
Maintain correct commercial tyre pressures, especially when changing loads from empty to fully laden.
Is the cheaper petrol station worth it?
In a Ford Transit Custom achieving ~34 MPG real-world, if you fill 56 litres and the alternative station is 10p/litre cheaper:
£5.60
Gross saving on fuel
£0.57
Cost of 3-mile detour
£5.03
Net saving ✓
You could drive up to 29 miles round-trip before the saving disappears entirely.
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Frequently asked questions
What is the real-world MPG of the Ford Transit Custom?
The Ford Transit Custom achieves approximately 34 MPG diesel in real-world conditions, around 12% lower than the official WLTP figure of 40.9 MPG.
How much does it cost to fill a Ford Transit Custom?
The Ford Transit Custom has a fuel tank of 70 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £95.76. Diesel costs approximately £99.47 for a full tank.
What is the annual fuel cost for a Ford Transit Custom?
At 7,400 miles/year and 142.1p/litre diesel, a Ford Transit Custom costs approximately £1406 per year in diesel.
Is it worth driving to a cheaper petrol station in a Ford Transit Custom?
In a Ford Transit Custom doing ~34 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 56-litre fill nets approximately £5.03 after the extra fuel cost. You could drive up to 29 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Ford Transit Custom cost per mile in fuel?
The Ford Transit Custom costs approximately 19.0p per mile in diesel at current UK prices.
What is the WLTP MPG figure for the Ford Transit Custom?
The official WLTP fuel economy figure for the Ford Transit Custom is 40.9 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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