Help & Support
Price Promise - Double the difference If you find the same quality car for less
Sell your car for FREE Save £199. Limited time only
Price Drops Save over £500 on 100s of cars
BMW 3 Series variants
Total price
Monthly payment
Figures are based on a 20% deposit

BMW 3 Series

320d M Sport 4dr Step Auto

2018 (18) reg | 17,649 miles

Diesel | 3 months warranty

Burnley
Finance example

£17,999

£322 per month

BMW 3 Series

320d MHT M Sport 4dr Step Auto

2021 (21) reg | 25,327 miles

Diesel | 3 months warranty

Burnley

Was £25,499

Finance example

£24,999

£325 per month

£500 off
Below are matching vehicles at other stores

BMW 3 Series

320d M Sport 4dr Step Auto

2019 (19) reg | 19,818 miles

Diesel | 3 months warranty

In transit to Chingford
Finance example

£22,999

£411 per month

BMW 3 Series

320d Sport 4dr Step Auto

2019 (69) reg | 42,827 miles

Diesel | 3 months warranty

In transit to Birmingham
Finance example

£19,599

£252 per month

BMW 3 Series

320d xDrive M Sport 5dr Step Auto

2017 (67) reg | 18,537 miles

Diesel | 3 months warranty

Derby
Finance example

£19,999

£357 per month

BMW 3 Series

330d M Sport Plus Edition 5dr Step Auto

2020 (20) reg | 36,164 miles

Diesel | 3 months warranty

In transit to Coventry

Was £29,999

Finance example

£29,299

£392 per month

£700 off

BMW 3 Series

335d xDrive M Sport 4dr Step Auto

2017 (67) reg | 10,815 miles

Diesel | 3 months warranty

Birtley
Finance example

£20,599

£368 per month

BMW 3 Series

330d MHT M Sport 4dr Step Auto [Pro Pack]

2022 (22) reg | 28,725 miles

Diesel | 15 months warranty

Widnes

Was £29,599

Finance example

£28,999

£347 per month

£600 off

BMW 3 Series

320d Sport 4dr Step Auto

2019 (19) reg | 15,753 miles

Diesel | 3 months warranty

Newport
Finance example

£21,999

£283 per month

BMW 3 Series

320d M Sport 4dr

2017 (67) reg | 41,685 miles

Diesel | 3 months warranty

Birmingham
Finance example

£13,999

£250 per month

BMW 3 Series

320d MHT M Sport Pro Ed 4dr Step Auto [Tech Pack]

2020 (70) reg | 22,753 miles

Diesel | 3 months warranty

Oldbury
Finance example

£26,599

£336 per month

BMW 3 Series

320d M Sport 4dr

2018 (68) reg | 34,628 miles

Diesel | 3 months warranty

Portsmouth
Finance example

£14,999

£268 per month

BMW 3 Series

318d M Sport 5dr Step Auto

2019 (19) reg | 31,624 miles

Diesel | 3 months warranty

Sheffield
Finance example

£18,999

£307 per month

BMW 3 Series

320d MHT M Sport 4dr Step Auto

2021 (21) reg | 23,436 miles

Diesel | 3 months warranty

Glasgow
Finance example

£25,599

£335 per month

BMW 3 Series

320d M Sport 4dr Step Auto

2019 (19) reg | 29,628 miles

Diesel | 3 months warranty

Peterborough
Finance example

£21,699

£388 per month

BMW 3 Series

320d M Sport 4dr

2019 (69) reg | 7,728 miles

Diesel | 3 months warranty

Glasgow
Finance example

£21,799

£267 per month

BMW 3 Series

320d MHT M Sport 5dr Step Auto

2022 (22) reg | 29,391 miles

Diesel | 12 months warranty

Edinburgh
Finance example

£28,199

£352 per month

BMW 3 Series

320d M Sport 4dr Step Auto

2019 (68) reg | 41,445 miles

Diesel | 3 months warranty

Widnes

Was £21,699

Finance example

£20,999

£375 per month

£700 off

BMW 3 Series

318d Sport 5dr Step Auto

2020 (69) reg | 23,647 miles

Diesel | 3 months warranty

Swansea

Was £23,999

Finance example

£22,999

£315 per month

£1,000 off

BMW 3 Series

335d xDrive M Sport 4dr Step Auto

2017 (67) reg | 33,583 miles

Diesel | 3 months warranty

Birmingham
Finance example

£18,599

£332 per month

BMW 3 Series

320d MHT M Sport 4dr Step Auto

2021 (21) reg | 29,193 miles

Diesel | 3 months warranty

Chingford

Was £24,599

Finance example

£23,999

£307 per month

£600 off

BMW 3 Series

320d M Sport 4dr Step Auto

2020 (20) reg | 31,345 miles

Diesel | 3 months warranty

In transit to Coventry
Finance example

£23,999

£319 per month

Showing 1 - 22 of 22 results

Finance representative example (PCP)

Total cash price £25,599. Borrowing £20,479 with a £5,120 deposit at a representative APR of 12.9%.

49 monthly payments
£335.32
Fixed interest rate
12.9%
Total amount payable
£34,003.27
Cost of credit
£8,404.27
Optional final payment
£12,788.00
Annual mileage limit
6000 miles

BMW 3 Series diesel FAQs

All 3 Series diesels have a 'd' at the end of their name. So you've got your 318d, 320d, 335d and M340d. The 318 is a 2.0-litre four-cylinder diesel with 150hp, the 320d is a 2.0-litre four-cylinder with 190hp, the 335d is a 3.0-litre six-cylinder with 313hp and the M340d is the range-topping 3.0-litre engine with 340hp and a walloping 700Nm of torque. It's the fastest-accelerating diesel car you can currently buy.

Fuel economy in any BMW 3 Series diesel will be impressive and better than its petrol equivalent on a long journey. The 318d gets 53-55mpg in official testing, the 320d gets 52-54mpg, the 330d is more powerful so drops to 46-49mpg, while the bonkers M340d still gets a reasonable 45mpg.

The 3 Series should be reliable when fitted with any of the brand's diesel engines. A What Car? survey from 2021 placed the 3 Series diesel fourth out of 17 cars in the executive car class. However pre-2018 cars did suffer from a range of engine faults, so try to pick a later model.