Kia Rio — MPG & Fuel Costs 2025
Kia's robust and spacious supermini, offering simple mechanical design, low insurance groups, and excellent economy.
TL;DR
47 MPG
Real-world petrol
45L
Tank capacity
£61.56
Full tank (petrol)
13.2p
Per mile (petrol)
Real-World Fuel Economy: The Kia Rio achieves an estimated 47 MPG in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 45-litre tank completely costs approximately £61.56 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 (45L) | £61.56 |
| 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 Rio compare?
Tips to get better MPG from your Rio
Keep driving style defensive to save fuel.
Upshift early; the naturally aspirated engine does not require high revs.
Avoid using air conditioning continuously on short local trips.
Is the cheaper petrol station worth it?
In a Kia Rio achieving ~47 MPG real-world, if you fill 36 litres and the alternative station is 10p/litre cheaper:
£3.60
Gross saving on fuel
£0.40
Cost of 3-mile detour
£3.20
Net saving ✓
You could drive up to 27 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 Rio?
The Kia Rio 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 Kia Rio?
The Kia Rio has a fuel tank of 45 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £61.56. Diesel costs approximately £63.95 for a full tank.
What is the annual fuel cost for a Kia Rio?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Kia Rio 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 Kia Rio?
In a Kia Rio doing ~47 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 36-litre fill nets approximately £3.20 after the extra fuel cost. You could drive up to 27 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Kia Rio cost per mile in fuel?
The Kia Rio 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 Kia Rio?
The official WLTP fuel economy figure for the Kia Rio 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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