Audi A4 — MPG & Fuel Costs 2025
Audi's executive saloon and Avant estate. Refined motorway cruiser with strong diesel options for high-mileage drivers.
The Audi A4 is a cornerstone of the executive car market, offering a beautifully finished interior, quiet ride, and low company car tax brackets. It is available as a classic four-door saloon or the highly popular Avant estate.
Power is delivered by refined 2.0-litre TFSI petrol or 2.0-litre TDI diesel engines, most of which feature 12V mild-hybrid assistance. The TDI models are built for the motorway, pulling strongly and efficiently at speed.
Real-world fuel economy for the diesel sits around 49 MPG, while the petrol manages a respectable 38 MPG. It is an ideal business tool, offering long range and low road noise, making cross-country trips effortless.
TL;DR
38 MPG
Real-world petrol
49 MPG
Real-world diesel
58L
Tank capacity
£79.34
Full tank (petrol)
16.4p
Per mile (petrol)
Real-World Fuel Economy: The Audi A4 achieves an estimated 38 MPG (petrol) and 49 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 58-litre tank completely costs approximately £79.34 (petrol) or £82.42 (diesel) at average UK fuel price rates.
Fuel economy at a glance
38
Real-world MPG
Petrol
44.8
Official WLTP
Petrol
49
Real-world MPG
Diesel
57.7
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £818 | £659 |
| 7,400 miles/yr(UK average) | £1211 | £976 |
| 10,000 miles/yr | £1637 | £1318 |
| 15,000 miles/yr | £2455 | £1978 |
| 20,000 miles/yr | £3273 | £2637 |
| Full tank (58L) | £79.34 | £82.42 |
| Cost per mile | 16.4p | 13.2p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the A4 compare?
Tips to get better MPG from your A4
Use the efficiency assistant in the virtual cockpit to guide your driving style and predict acceleration zones.
Cruising at 65 mph on the motorway utilizes the low drag coefficient of the A4's sleek executive body shape.
Check tyre pressures before long trips; a heavy load in the Avant estate can severely drag down mileage if tyres are low.
Is the cheaper petrol station worth it?
In a Audi A4 achieving ~38 MPG real-world, if you fill 46 litres and the alternative station is 10p/litre cheaper:
£4.60
Gross saving on fuel
£0.49
Cost of 3-mile detour
£4.11
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 Audi A4?
The Audi A4 achieves approximately 38 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 44.8 MPG due to real driving conditions. Diesel variants achieve around 49 MPG real-world.
How much does it cost to fill a Audi A4?
The Audi A4 has a fuel tank of 58 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £79.34. Diesel costs approximately £82.42 for a full tank.
What is the annual fuel cost for a Audi A4?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Audi A4 costs approximately £1211 per year in fuel. At 10,000 miles/year the cost rises to £1637. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Audi A4?
In a Audi A4 doing ~38 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 46-litre fill nets approximately £4.11 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 Audi A4 cost per mile in fuel?
The Audi A4 costs approximately 16.4p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.92 per day in fuel.
What is the WLTP MPG figure for the Audi A4?
The official WLTP fuel economy figure for the Audi A4 is 44.8 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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