Mazda Mazda3 — MPG & Fuel Costs 2025
Mazda's premium compact hatchback and fastback. High-quality interior, excellent driving dynamics, and a naturally aspirated 2.0 Skyactiv-X mild hybrid engine.
The Mazda 3 is a premium compact hatchback that stands out with its sleek, curved styling and high-quality minimalist interior. It appeals to drivers who want executive-level quality and sharp handling in a compact car.
Engines include the e-Skyactiv-G and the unique e-Skyactiv-X, which uses compression ignition (like a diesel) to burn petrol more efficiently. Both engines feature 24V mild-hybrid technology to capture energy under braking.
A real-world return of 47 MPG for the Skyactiv-X engine is highly competitive, offering petrol refinement with close to diesel-level economy. It is a highly polished, stylish hatchback with low running costs.
TL;DR
47 MPG
Real-world petrol
51L
Tank capacity
£69.77
Full tank (petrol)
13.2p
Per mile (petrol)
Real-World Fuel Economy: The Mazda Mazda3 achieves an estimated 47 MPG in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 51-litre tank completely costs approximately £69.77 at average UK fuel price rates.
Fuel economy at a glance
47
Real-world MPG
Petrol
55.4
Official WLTP
Petrol
Annual fuel costs by mileage
| Annual mileage | Petrol |
|---|---|
| 5,000 miles/yr | £662 |
| 7,400 miles/yr(UK average) | £979 |
| 10,000 miles/yr | £1323 |
| 15,000 miles/yr | £1985 |
| 20,000 miles/yr | £2646 |
| Full tank (51L) | £69.77 |
| Cost per mile | 13.2p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Mazda3 compare?
Tips to get better MPG from your Mazda3
The Skyactiv-X engine uses Spark Controlled Compression Ignition (SPCCI); keep driving smooth to let it run in lean-burn mode.
Make use of the mild-hybrid system: lift off early to capture energy and coast smoothly.
Check tyre pressures regularly; the low-profile tyres on Sport models can drag down MPG if they are under-inflated.
Is the cheaper petrol station worth it?
In a Mazda Mazda3 achieving ~47 MPG real-world, if you fill 41 litres and the alternative station is 10p/litre cheaper:
£4.10
Gross saving on fuel
£0.40
Cost of 3-mile detour
£3.70
Net saving ✓
You could drive up to 31 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 Mazda Mazda3?
The Mazda Mazda3 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 N/A MPG real-world.
How much does it cost to fill a Mazda Mazda3?
The Mazda Mazda3 has a fuel tank of 51 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £69.77. Diesel costs approximately £72.47 for a full tank.
What is the annual fuel cost for a Mazda Mazda3?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Mazda Mazda3 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 Mazda Mazda3?
In a Mazda Mazda3 doing ~47 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 41-litre fill nets approximately £3.70 after the extra fuel cost. You could drive up to 31 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Mazda Mazda3 cost per mile in fuel?
The Mazda Mazda3 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 Mazda Mazda3?
The official WLTP fuel economy figure for the Mazda Mazda3 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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