BMW 340I

Reliability, estimated running costs, and MOT data across 6 model years from 1,888 MOT tests in 2024.

Avg Pass Rate

91%

Total Tests

1,888

Highest Pass Rate

2016 (95%)

Years Covered

About the BMW 340I

The BMW 340I was MOT tested 1,888 times in 2024 (DVSA data, retests included) across 6 model years (2016 to 2021), with an average pass rate of 91%. That's comfortably above the average of 82% across all models in our data. Our records list petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2016 model has the highest pass rate at 95% from 229 tests. The 2019 model has the lowest at 90%. With just a 5 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.

Reliability Trend

The BMW 340I has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.

Mileage Across Years

The oldest model in our data (2016) averages 59,892 miles, while the newest (2021) averages 21,253 miles.

Estimated Running Costs

Fuel (Petrol, 2998cc)

£1,958

Road Tax

£200

MOT Test

£55

Predicted Repairs

£200

Total per year£2,413

Per month£201/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the BMW 340I?

vs average of all models+9% (82% avg)

vs BMW brand average+3% (88% avg)

Best to worst year spread5 percentage points

Reliability trendStable over years

BMW 340I by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2021	96%	49	21,253 mi
2020	80%	30	36,809 mi
2019	90%	158	33,798 mi
2018	94%	459	41,504 mi
2017	92%	963	52,872 mi
2016	95%	229	59,892 mi

Questions about the BMW 340I

Is the BMW 340I reliable?

Across its 6 model years in our data (2016 to 2021), the BMW 340I averages a 91% MOT pass rate, from 1,888 tests (DVSA MOT data for tests in 2024, retests included). That's 9 points above the average of 82% across all models in the same data. The 2016 model has the highest pass rate of the years with at least 100 tests, at 95%.

Which year BMW 340I has the best MOT pass rate?

Of the years with at least 100 tests, the 2016 BMW 340I has the highest MOT pass rate at 95%, while the 2019 model has the lowest at 90%, a 5 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.