Alfa Romeo 159 — MPG & Fuel Costs 2025
Alfa Romeo's beautiful executive saloon, combining striking styling with sharp handling and robust JTDM diesel engines.
The Alfa Romeo 159 is one of the most beautiful saloons of the 21st century, designed by Giorgetto Giugiaro. It features a high-quality cabin and sharp driving dynamics.
It is powered by JTS petrol engines or Alfa's highly reliable JTDM common-rail turbodiesel engines, which offer excellent fuel economy.
Real-world fuel economy is around 40 MPG for the diesel and 29 MPG for the petrol version in mixed driving.
TL;DR
29 MPG
Real-world petrol
40 MPG
Real-world diesel
70L
Tank capacity
£95.76
Full tank (petrol)
21.4p
Per mile (petrol)
Real-World Fuel Economy: The Alfa Romeo 159 achieves an estimated 29 MPG (petrol) and 40 MPG (diesel) in real-world UK driving conditions, accounting for a 12% WLTP real-world penalty.
Forecourt Fuel Cost: Refueling the 70-litre tank completely costs approximately £95.76 (petrol) or £99.47 (diesel) at average UK fuel price rates.
Fuel economy at a glance
29
Real-world MPG
Petrol
34.9
Official WLTP
Petrol
40
Real-world MPG
Diesel
47.9
Official WLTP
Diesel
Annual fuel costs by mileage
| Annual mileage | Petrol | Diesel |
|---|---|---|
| 5,000 miles/yr | £1072 | £807 |
| 7,400 miles/yr(UK average) | £1587 | £1195 |
| 10,000 miles/yr | £2144 | £1615 |
| 15,000 miles/yr | £3217 | £2422 |
| 20,000 miles/yr | £4289 | £3230 |
| Full tank (70L) | £95.76 | £99.47 |
| Cost per mile | 21.4p | 16.1p |
Based on UK average fuel prices: petrol 136.8p/L · diesel 142.1p/L. Prices updated regularly.
How does the 159 compare?
Tips to get better MPG from your 159
The 159 is heavy; avoid aggressive starts to keep fuel consumption down.
Engage cruise control on highway stretches to keep engine RPM steady.
Check tyre pressures regularly to prevent rolling resistance.
Is the cheaper petrol station worth it?
In a Alfa Romeo 159 achieving ~29 MPG real-world, if you fill 56 litres and the alternative station is 10p/litre cheaper:
£5.60
Gross saving on fuel
£0.64
Cost of 3-mile detour
£4.96
Net saving ✓
You could drive up to 26 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 Alfa Romeo 159?
The Alfa Romeo 159 achieves approximately 29 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 34.9 MPG due to real driving conditions. Diesel variants achieve around 40 MPG real-world.
How much does it cost to fill a Alfa Romeo 159?
The Alfa Romeo 159 has a fuel tank of 70 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £95.76. Diesel costs approximately £99.47 for a full tank.
What is the annual fuel cost for a Alfa Romeo 159?
At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Alfa Romeo 159 costs approximately £1587 per year in fuel. At 10,000 miles/year the cost rises to £2144. Actual costs vary with your driving style and mileage.
Is it worth driving to a cheaper petrol station in a Alfa Romeo 159?
In a Alfa Romeo 159 doing ~29 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 56-litre fill nets approximately £4.96 after the extra fuel cost. You could drive up to 26 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.
How much does the Alfa Romeo 159 cost per mile in fuel?
The Alfa Romeo 159 costs approximately 21.4p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £6.42 per day in fuel.
What is the WLTP MPG figure for the Alfa Romeo 159?
The official WLTP fuel economy figure for the Alfa Romeo 159 is 34.9 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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