Citroen C4 Cactus — MPG & Fuel Costs 2025
Citroen's quirkily styled crossover, famous for its protective 'Airbump' side panels and lightweight, highly efficient design.
The Citroen C4 Cactus is an unconventional compact crossover designed to prioritize passenger comfort and low running costs. It features distinctive air-filled Airbump panels to prevent parking dents.
It is powered by Peugeot-Citroen's award-winning three-cylinder PureTech petrol engines and highly frugal BlueHDi diesels.
Real-world fuel economy is outstanding, with the diesel returning around 57 MPG and petrol versions averaging around 47 MPG.
TL;DR
47 MPG
Real-world petrol
57 MPG
Real-world diesel
50L
Tank capacity
£68.40
Full tank (petrol)
13.2p
Per mile (petrol)
Real-World Fuel Economy: The Citroen C4 Cactus achieves an estimated 47 MPG (petrol) and 57 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
47
Real-world MPG
Petrol
55.4
Official WLTP
Petrol
57
Real-world MPG
Diesel
67.3
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £662 | £567 |
| 7,400 miles/yr(UK average) | £979 | £839 |
| 10,000 miles/yr | £1323 | £1133 |
| 15,000 miles/yr | £1985 | £1700 |
| 20,000 miles/yr | £2646 | £2267 |
| Full tank (50L) | £68.40 | £71.05 |
| Cost per mile | 13.2p | 11.3p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the C4 Cactus compare?
Tips to get better MPG from your C4 Cactus
The Cactus is lightweight; keep driving smooth to save fuel.
Upshift early to utilize the turbo engine's low-end torque.
Use standard driving modes to maintain a smoother throttle curve.
Is the cheaper petrol station worth it?
In a Citroen C4 Cactus achieving ~47 MPG real-world, if you fill 40 litres and the alternative station is 10p/litre cheaper:
£4.00
Gross saving on fuel
£0.40
Cost of 3-mile detour
£3.60
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 Citroen C4 Cactus?
The Citroen C4 Cactus 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 57 MPG real-world.
How much does it cost to fill a Citroen C4 Cactus?
The Citroen C4 Cactus 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 Citroen C4 Cactus?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Citroen C4 Cactus 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 Citroen C4 Cactus?
In a Citroen C4 Cactus doing ~47 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 40-litre fill nets approximately £3.60 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 Citroen C4 Cactus cost per mile in fuel?
The Citroen C4 Cactus 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 Citroen C4 Cactus?
The official WLTP fuel economy figure for the Citroen C4 Cactus 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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