BMW 840i Auto: MOT pass rate and reliability data

The BMW 840i Auto passes its MOT first time more often than the average UK car, by 10.5 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 1,673 individual BMW 840i Auto tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate87.2%
UK national average76.7%
Difference+10.5 points
Tests analysed1,673
Average mileage at test30,563 miles
Average year of manufacture2020
Reliability rank1,084 of 2,005 models

What this means if you are buying one

A 87.2% first-time pass rate means roughly 13 in every 100 BMW 840i Autos presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average BMW 840i Auto tested had covered 30,563 miles and was built around 2020.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The BMW 840i Auto sits 10.5 points above the national average, ranked 1,084 of 2,005 models. On one bought as repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific BMW 840i Auto rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see recorded closing bids for damaged BMW 840i Autos at UK salvage auction.

Most common MOT failures on a BMW 840i Auto

  1. A tyre cords visible or damaged, 5.7% of tests (3.39x the national rate for this defect)
  2. A tyre seriously damaged, 7.3% of tests (2.62x the national rate for this defect)
  3. Tyre tread depth not in accordance with the requirements, 0.8% of tests
  4. The aim of a headlamp is not within limits laid down in the requirements, 0.6% of tests
  5. Number plate does not conform to the specified requirements, 0.5% of tests (2.59x the national rate for this defect)
  6. Any fracture or welding defect on a wheel, 0.5% of tests (8.15x the national rate for this defect)
  7. Emissions levels exceed default limits, 0.4% of tests (1.19x the national rate for this defect)
  8. Wiper blade missing or obviously not clearing the windscreen, 0.3% of tests
  9. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.2% of tests
  10. A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 0.2% of tests

From 1,669 DVSA-tracked BMW 840i Auto tests, 2024. DVSA testers marked 19.1% of these flagged BMW 840i Auto defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a BMW 840i Auto

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a BMW 840i Auto before it actually fails on it.

  1. Tyre tread depth not in accordance with the requirements, 18.4% of tests, also fails
  2. A tyre seriously damaged, 11.1% of tests, also fails
  3. a brake lining or pad worn below 1.5mm, 2.8% of tests
  4. Brake disc or drum excessively weakened, insecure or fractured, 1.3% of tests
  5. A wheel badly distorted or wear between wheel and hub at spigot mounting, 0.7% of tests
  6. A transmission shaft flexible coupling excessively deteriorated, 0.5% of tests (8.45x the national rate for this advisory)
  7. Excessive fluctuation in brake effort through each wheel revolution., 0.4% of tests
  8. A suspension pin, bush or joint excessively worn, 0.2% of tests
  9. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 0.2% of tests
  10. Brake disc or drum significantly and obviously worn, 0.1% of tests

From 1,669 DVSA-tracked BMW 840i Auto tests, 2024.

BMW 840i Auto pass rate by model year

Pass rates fall steadily as cars age, so the model year matters as much as the model. First-time pass rate for each BMW 840i Auto year:

Other BMW models

Models with a similar pass rate

If this car is a salvage or write-off

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BMW 840i Auto MOT pass rate badge: 87.2%

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BMW 840i Auto most common MOT failure: A tyre cords visible or damaged (5.7% of tests)

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All 2,005 models ranked by MOT pass rate