Mazda Mazda6 — MPG & Fuel Costs 2025
Mazda's flagship saloon and estate, combining stunning Skyactiv design with sporty drive dynamics and high efficiency.
TL;DR
42 MPG
Real-world petrol
53 MPG
Real-world diesel
62L
Tank capacity
£84.82
Full tank (petrol)
14.8p
Per mile (petrol)
Real-World Fuel Economy: The Mazda Mazda6 achieves an estimated 42 MPG (petrol) and 53 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 62-litre tank completely costs approximately £84.82 (petrol) or £88.10 (diesel) at average UK fuel price rates.
Fuel economy at a glance
42
Real-world MPG
Petrol
49.6
Official WLTP
Petrol
53
Real-world MPG
Diesel
62.8
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £740 | £609 |
| 7,400 miles/yr(UK average) | £1096 | £902 |
| 10,000 miles/yr | £1481 | £1219 |
| 15,000 miles/yr | £2221 | £1828 |
| 20,000 miles/yr | £2961 | £2438 |
| Full tank (62L) | £84.82 | £88.10 |
| Cost per mile | 14.8p | 12.2p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Mazda6 compare?
Tips to get better MPG from your Mazda6
The Skyactiv manual gearbox shifts smoothly; upshift early to keep engine RPMs down.
Clean DPF filters regularly on diesel models by taking them on motorway runs.
Ensure tyre pressures are optimized to handle the large executive chassis.
Is the cheaper petrol station worth it?
In a Mazda Mazda6 achieving ~42 MPG real-world, if you fill 50 litres and the alternative station is 10p/litre cheaper:
£5.00
Gross saving on fuel
£0.44
Cost of 3-mile detour
£4.56
Net saving ✓
You could drive up to 34 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 Mazda6?
The Mazda Mazda6 achieves approximately 42 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 49.6 MPG due to real driving conditions. Diesel variants achieve around 53 MPG real-world.
How much does it cost to fill a Mazda Mazda6?
The Mazda Mazda6 has a fuel tank of 62 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £84.82. Diesel costs approximately £88.10 for a full tank.
What is the annual fuel cost for a Mazda Mazda6?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Mazda Mazda6 costs approximately £1096 per year in fuel. At 10,000 miles/year the cost rises to £1481. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Mazda Mazda6?
In a Mazda Mazda6 doing ~42 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 50-litre fill nets approximately £4.56 after the extra fuel cost. You could drive up to 34 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Mazda Mazda6 cost per mile in fuel?
The Mazda Mazda6 costs approximately 14.8p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.44 per day in fuel.
What is the WLTP MPG figure for the Mazda Mazda6?
The official WLTP fuel economy figure for the Mazda Mazda6 is 49.6 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 Mazda6
Enter your registration and we'll calculate whether the cheaper station nearby is worth the detour — factoring in your Mazda6's real-world MPG.
Try WorthThePump — it's free