How reliable is the BMW 420?
Owner-reported reliability data: inspection results, typical mileage, and the most common failures.
The BMW 420 consistently passes first-time inspections at an above-average rate. The most commonly reported issues are tyre tread depth not in accordance with the requirements, a tyre cords visible or damaged, a tyre seriously damaged. Typical mileage by age and a year-by-year breakdown of reliability are shown below. All figures are owner-reported real-world data, not a marketing rating.
Above average reliability
Based on 33,801 inspection tests. First-time pass rate: 88.3%.
BMW 420 reliability by year
How the BMW 420 performs at first-time inspection, broken down by the year cohort. Empty cells mean we don't have enough owner-reported data for that year yet.
| Year cohort | Pass rate | Typical mileage @ 5 yrs |
|---|---|---|
| 2013 | 82.6% | – |
| 2014 | 83.5% | – |
| 2015 | 86.2% | – |
| 2016 | 87.7% | – |
| 2017 | 88.3% | 78,529 km |
| 2018 | 89.2% | 68,992 km |
| 2019 | 89.2% | 66,552 km |
| 2020 | 91.2% | 57,400 km |
| 2021 | 94.1% | – |
Model-level pattern, not per-car prediction
These figures describe the BMW 420 as a model. The reliability of any individual BMW 420 also depends on service history, accident history, and how it was driven. Run a free VIN check to see the records attached to a specific car you're considering.
Frequently asked questions
Is the BMW 420 reliable?
Based on owner-reported inspection records, the BMW 420 consistently passes first-time inspections at an above-average rate. Its first-time inspection pass rate sits around 88%. Reliability varies by year and engine: see the year-by-year breakdown on this page for the specific cohort you're considering.
What are the common problems on the BMW 420?
The most common owner-reported issues are: Tyre tread depth not in accordance with the requirements (1.4% of inspections); A tyre cords visible or damaged (1.3% of inspections); A tyre seriously damaged (0.9% of inspections); A tyre seriously damaged (0.8% of inspections); a brake lining or pad worn below 1.5mm (0.7% of inspections).
What mileage is normal for a BMW 420?
For a typical BMW 420, owner-reported average mileage works out to about – at 3 years, 78,529 km at 5 years, and – at 10 years. The mileage section on this page shows the full distribution, high-use vs low-use cars often differ by a factor of three.
How do I check a specific BMW 420 before buying?
Enter the 17-character VIN on Carlytics. The free check shows decoded specs and open safety recalls. The full vehicle history report (from EUR 8.90) cross-references owner-reported issues, mileage records, and stolen-vehicle databases for the specific car, model-level reliability tells you the pattern, the VIN check tells you the car.