Hyundai i30 — MPG & Fuel Costs 2025
Hyundai's reliable family hatchback. Offering great value, high comfort, and highly economical engine options.
TL;DR
44 MPG
Real-world petrol
54 MPG
Real-world diesel
50L
Tank capacity
£68.40
Full tank (petrol)
14.1p
Per mile (petrol)
Real-World Fuel Economy: The Hyundai i30 achieves an estimated 44 MPG (petrol) and 54 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 50-litre tank completely costs approximately £68.40 (petrol) or £71.05 (diesel) at average UK fuel price rates.
Fuel economy at a glance
44
Real-world MPG
Petrol
52.3
Official WLTP
Petrol
54
Real-world MPG
Diesel
64.2
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £707 | £598 |
| 7,400 miles/yr(UK average) | £1046 | £885 |
| 10,000 miles/yr | £1413 | £1196 |
| 15,000 miles/yr | £2120 | £1794 |
| 20,000 miles/yr | £2827 | £2393 |
| Full tank (50L) | £68.40 | £71.05 |
| Cost per mile | 14.1p | 12.0p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the i30 compare?
Tips to get better MPG from your i30
For diesel models, utilize cruise control on highway stretches to keep engine RPMs steady.
Maintain a steady throttle and use the gearshift indicator to prevent the engine from laboring under load.
Check tyre pressures regularly to preserve the vehicle's rolling efficiency.
Is the cheaper petrol station worth it?
In a Hyundai i30 achieving ~44 MPG real-world, if you fill 40 litres and the alternative station is 10p/litre cheaper:
£4.00
Gross saving on fuel
£0.42
Cost of 3-mile detour
£3.58
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 Hyundai i30?
The Hyundai i30 achieves approximately 44 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 52.3 MPG due to real driving conditions. Diesel variants achieve around 54 MPG real-world.
How much does it cost to fill a Hyundai i30?
The Hyundai i30 has a fuel tank of 50 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £68.40. Diesel costs approximately £71.05 for a full tank.
What is the annual fuel cost for a Hyundai i30?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Hyundai i30 costs approximately £1046 per year in fuel. At 10,000 miles/year the cost rises to £1413. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Hyundai i30?
In a Hyundai i30 doing ~44 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 40-litre fill nets approximately £3.58 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 Hyundai i30 cost per mile in fuel?
The Hyundai i30 costs approximately 14.1p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.23 per day in fuel.
What is the WLTP MPG figure for the Hyundai i30?
The official WLTP fuel economy figure for the Hyundai i30 is 52.3 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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