BMW 540I engine and engine cooling problems by year
42 NHTSA owner complaints name the engine and engine cooling across 4 540I model years. The most reported year is 1998 with 16 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2000 540I | 8 | 26% | — | |
| 1999 540I | 5 | 23% | — | |
| 1998 540I | 16 | 62% | 57,262 mi | |
| 1997 540I | 13 | 48% | 73,280 mi |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.