Kia Niro — MPG & Fuel Costs 2025
Kia's dedicated hybrid crossover, featuring spacious cabin layout, modern tech, and outstanding real-world fuel economy.
TL;DR
54 MPG
Real-world petrol
42L
Tank capacity
£57.46
Full tank (petrol)
11.5p
Per mile (petrol)
Real-World Fuel Economy: The Kia Niro achieves an estimated 54 MPG in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 42-litre tank completely costs approximately £57.46 at average UK fuel price rates.
Fuel economy at a glance
54
Real-world MPG
Petrol
64.2
Official WLTP
Petrol
Annual fuel costs by mileage
| Annual mileage | Petrol |
|---|---|
| 5,000 miles/yr | £576 |
| 7,400 miles/yr(UK average) | £852 |
| 10,000 miles/yr | £1152 |
| 15,000 miles/yr | £1727 |
| 20,000 miles/yr | £2303 |
| Full tank (42L) | £57.46 |
| Cost per mile | 11.5p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the Niro compare?
Tips to get better MPG from your Niro
Maximize the electric motor usage in town by keeping throttle applications smooth.
Select 'Eco' mode to temper throttle response and optimize hybrid system battery usage.
Regenerate power by braking early and progressively.
Is the cheaper petrol station worth it?
In a Kia Niro achieving ~54 MPG real-world, if you fill 34 litres and the alternative station is 10p/litre cheaper:
£3.40
Gross saving on fuel
£0.35
Cost of 3-mile detour
£3.05
Net saving ✓
You could drive up to 30 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 Kia Niro?
The Kia Niro achieves approximately 54 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 64.2 MPG due to real driving conditions. Diesel variants achieve around N/A MPG real-world.
How much does it cost to fill a Kia Niro?
The Kia Niro has a fuel tank of 42 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £57.46. Diesel costs approximately £59.68 for a full tank.
What is the annual fuel cost for a Kia Niro?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Kia Niro costs approximately £852 per year in fuel. At 10,000 miles/year the cost rises to £1152. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Kia Niro?
In a Kia Niro doing ~54 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 34-litre fill nets approximately £3.05 after the extra fuel cost. You could drive up to 30 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Kia Niro cost per mile in fuel?
The Kia Niro costs approximately 11.5p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £3.45 per day in fuel.
What is the WLTP MPG figure for the Kia Niro?
The official WLTP fuel economy figure for the Kia Niro is 64.2 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 Niro
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