Seat Leon — MPG & Fuel Costs 2025
SEAT's sharp-handling family hatchback and estate, sharing platforms with the Golf but with sportier styling and high value.
TL;DR
44 MPG
Real-world petrol
56 MPG
Real-world diesel
45L
Tank capacity
£61.56
Full tank (petrol)
14.1p
Per mile (petrol)
Real-World Fuel Economy: The Seat Leon achieves an estimated 44 MPG (petrol) and 56 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 45-litre tank completely costs approximately £61.56 (petrol) or £63.95 (diesel) at average UK fuel price rates.
Fuel economy at a glance
44
Real-world MPG
Petrol
52.3
Official WLTP
Petrol
56
Real-world MPG
Diesel
65.7
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £707 | £577 |
| 7,400 miles/yr(UK average) | £1046 | £854 |
| 10,000 miles/yr | £1413 | £1154 |
| 15,000 miles/yr | £2120 | £1730 |
| 20,000 miles/yr | £2827 | £2307 |
| Full tank (45L) | £61.56 | £63.95 |
| Cost per mile | 14.1p | 11.5p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Leon compare?
Tips to get better MPG from your Leon
Select Eco settings to smooth throttle responses.
Upshift early to utilize the turbo engine's low-end pull.
Avoid carrying unnecessary weight in the boot.
Is the cheaper petrol station worth it?
In a Seat Leon achieving ~44 MPG real-world, if you fill 36 litres and the alternative station is 10p/litre cheaper:
£3.60
Gross saving on fuel
£0.42
Cost of 3-mile detour
£3.18
Net saving ✓
You could drive up to 25 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 Seat Leon?
The Seat Leon achieves approximately 44 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 52.3 MPG due to real driving conditions. Diesel variants achieve around 56 MPG real-world.
How much does it cost to fill a Seat Leon?
The Seat Leon has a fuel tank of 45 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £61.56. Diesel costs approximately £63.95 for a full tank.
What is the annual fuel cost for a Seat Leon?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Seat Leon costs approximately £1046 per year in fuel. At 10,000 miles/year the cost rises to £1413. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Seat Leon?
In a Seat Leon doing ~44 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 36-litre fill nets approximately £3.18 after the extra fuel cost. You could drive up to 25 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Seat Leon cost per mile in fuel?
The Seat Leon costs approximately 14.1p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.23 per day in fuel.
What is the WLTP MPG figure for the Seat Leon?
The official WLTP fuel economy figure for the Seat Leon is 52.3 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
Find the cheapest fuel for your Leon
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