Subaru Impreza — MPG & Fuel Costs 2025
Subaru's compact family hatchback, featuring standard Symmetrical All-Wheel Drive and a unique Boxer engine layout.
The Subaru Impreza is a practical family hatchback that stands out by offering standard all-wheel drive, providing superb grip in all weather conditions.
It features Subaru's unique horizontally opposed Boxer petrol engines, with newer models using e-Boxer mild-hybrid technology.
Real-world fuel economy is around 36 MPG, which is slightly lower than typical hatchbacks due to the mechanical drag of the AWD system.
TL;DR
36 MPG
Real-world petrol
60L
Tank capacity
£82.08
Full tank (petrol)
17.3p
Per mile (petrol)
Real-World Fuel Economy: The Subaru Impreza achieves an estimated 36 MPG in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 60-litre tank completely costs approximately £82.08 at average UK fuel price rates.
Fuel economy at a glance
36
Real-world MPG
Petrol
43.5
Official WLTP
Petrol
Annual fuel costs by mileage
| Annual mileage | Petrol |
|---|---|
| 5,000 miles/yr | £864 |
| 7,400 miles/yr(UK average) | £1278 |
| 10,000 miles/yr | £1727 |
| 15,000 miles/yr | £2591 |
| 20,000 miles/yr | £3455 |
| Full tank (60L) | £82.08 |
| Cost per mile | 17.3p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Impreza compare?
Tips to get better MPG from your Impreza
The AWD system adds weight and friction; maintain steady highway speeds to preserve fuel.
Select standard driving modes to maintain a smoother throttle curve.
Upshift early to utilize the Boxer engine's low-end pull.
Is the cheaper petrol station worth it?
In a Subaru Impreza achieving ~36 MPG real-world, if you fill 48 litres and the alternative station is 10p/litre cheaper:
£4.80
Gross saving on fuel
£0.52
Cost of 3-mile detour
£4.28
Net saving ✓
You could drive up to 28 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 Subaru Impreza?
The Subaru Impreza achieves approximately 36 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 43.5 MPG due to real driving conditions. Diesel variants achieve around N/A MPG real-world.
How much does it cost to fill a Subaru Impreza?
The Subaru Impreza has a fuel tank of 60 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £82.08. Diesel costs approximately £85.26 for a full tank.
What is the annual fuel cost for a Subaru Impreza?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Subaru Impreza costs approximately £1278 per year in fuel. At 10,000 miles/year the cost rises to £1727. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Subaru Impreza?
In a Subaru Impreza doing ~36 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 48-litre fill nets approximately £4.28 after the extra fuel cost. You could drive up to 28 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Subaru Impreza cost per mile in fuel?
The Subaru Impreza costs approximately 17.3p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £5.19 per day in fuel.
What is the WLTP MPG figure for the Subaru Impreza?
The official WLTP fuel economy figure for the Subaru Impreza is 43.5 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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