Vauxhall Grandland X — MPG & Fuel Costs 2025
Vauxhall's mid-size family crossover, offering high comfort levels, generous cabin space, and efficient engines.
TL;DR
41 MPG
Real-world petrol
51 MPG
Real-world diesel
53L
Tank capacity
£72.50
Full tank (petrol)
15.2p
Per mile (petrol)
Real-World Fuel Economy: The Vauxhall Grandland X achieves an estimated 41 MPG (petrol) and 51 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 53-litre tank completely costs approximately £72.50 (petrol) or £75.31 (diesel) at average UK fuel price rates.
Fuel economy at a glance
41
Real-world MPG
Petrol
48.7
Official WLTP
Petrol
51
Real-world MPG
Diesel
60.1
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £758 | £633 |
| 7,400 miles/yr(UK average) | £1122 | £937 |
| 10,000 miles/yr | £1517 | £1267 |
| 15,000 miles/yr | £2275 | £1900 |
| 20,000 miles/yr | £3034 | £2533 |
| Full tank (53L) | £72.50 | £75.31 |
| Cost per mile | 15.2p | 12.7p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Grandland X compare?
Tips to get better MPG from your Grandland X
Use Eco mode on the automatic models to keep the gearbox in higher gears for longer.
Charge the PHEV battery nightly to maximize electric-only running for daily commutes.
Avoid roof attachments like storage box rails to preserve your highway fuel economy.
Is the cheaper petrol station worth it?
In a Vauxhall Grandland X achieving ~41 MPG real-world, if you fill 42 litres and the alternative station is 10p/litre cheaper:
£4.20
Gross saving on fuel
£0.46
Cost of 3-mile detour
£3.74
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 Vauxhall Grandland X?
The Vauxhall Grandland X achieves approximately 41 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 48.7 MPG due to real driving conditions. Diesel variants achieve around 51 MPG real-world.
How much does it cost to fill a Vauxhall Grandland X?
The Vauxhall Grandland X has a fuel tank of 53 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £72.50. Diesel costs approximately £75.31 for a full tank.
What is the annual fuel cost for a Vauxhall Grandland X?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Vauxhall Grandland X costs approximately £1122 per year in fuel. At 10,000 miles/year the cost rises to £1517. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Vauxhall Grandland X?
In a Vauxhall Grandland X doing ~41 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 42-litre fill nets approximately £3.74 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 Vauxhall Grandland X cost per mile in fuel?
The Vauxhall Grandland X costs approximately 15.2p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.56 per day in fuel.
What is the WLTP MPG figure for the Vauxhall Grandland X?
The official WLTP fuel economy figure for the Vauxhall Grandland X is 48.7 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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