3 Series: yearly fuel cost

Premium saloon running costs are never pocket money, and the 2024 BMW 3 Series is no exception: 8,000 miles a year at £1.45 per litre works out to roughly £1,199 in petrol — about £100 a month, or £23 a week. Its combined figure of around 44 mpg matches the saloon segment average of 44.0 mpg in our 20-car dataset exactly (the only saloon in the sample, so it sets its own benchmark), delivered alongside roughly 184 hp and a brisk 7.1-second 0–62 time. Over five years, fuel totals around £6,000. That is the price of entry for rear-wheel-drive BMW performance — acceptable for the badge and the drive, but the hybrids and superminis in this list show how much cheaper motoring can be.

Enter your yearly mileage and the car's fuel economy.

Yearly fuel cost
£1,848
That's £154/month and £0.15/mile — about 1,275 litres a year.

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The WLTP laboratory cycle is kind to the 3 Series: real-world owners typically see 40–42 mpg in mixed driving against the ~44 mpg claim, with enthusiastic B-road driving and cold starts pulling it lower. Petrol-saving discipline for a BMW means resisting the Sport mode temptation on the commute, using Eco Pro for motorway slogs, and keeping cruising speeds at 70 mph — the 3 Series is deceptively quick at building speed, and speed is what drinks fuel. Monthly tyre-pressure checks and a boot clear-out help too. Verdict: the 3 Series asks a fair fuel price for its performance; drive it like a cruiser rather than a sports car and the official figure stays in sight. Premium fuel is not required, so there is no need to pay extra at the pump for branding.

Full BMW 3 Series review →

Frequently asked questions

How much does it cost to fuel a BMW 3 Series 2024 per year?
Roughly £1,199 a year at 8,000 miles and £1.45 per litre — about £100 a month or £23 a week, based on the 3 Series' ~44 mpg combined figure. It is the only saloon in our 20-car sample, so it defines the segment benchmark. Actual costs depend on mileage, driving style, and pump prices.
What is the real-world mpg of the BMW 3 Series 2024?
Expect 40–42 mpg in mixed real-world driving versus the ~44 mpg claim. Relaxed motorway cruising comes closest to the official figure; spirited driving, Sport mode, and short cold trips can drop it into the mid-30s. Eco Pro mode narrows the gap on longer runs.
How can I cut fuel costs in a BMW 3 Series 2024?
Save Sport mode for weekends and use Eco Pro on the commute, keep motorway speeds at 70 mph, and check tyre pressures monthly. The 3 Series builds speed effortlessly, so a light right foot is the single biggest lever — it can save £120–£180 a year for a typical driver.