BMW · Convertible · 1998–2006
BMW 3er E46 Cabrio
Weaknesses, engine ratings and buying advice
★★★★★
2.0 / 5.0 · Based on 6 engine variants Most Fun Engine
231 PS
3.0L 24V Benzin
Naturally aspirated legend
Fun to Drive! Problem Engine
116–136 PS
2.0L Diesel Diesel
7 weaknesses
Stay Away!Engine Overview
The BMW 3er E46 Cabrio is available with 5 engine variants — from 116 to 231 hp.
320d Engine Change
2003 2006
Stay Away! 7 weaknesses
2003 2006
Stay Away! 7 weaknesses
320i Engine Change
2000 2006
Stay Away! 5 weaknesses
2000 2006
Stay Away! 5 weaknesses
2000 2006
Stay Away! 5 weaknesses
323Ci
1999 2000
Stay Away! 5 weaknesses
325i Engine Change
2000 2006
Be Careful 6 weaknesses
2000 2006
Be Careful 6 weaknesses
330i
2000 2006
Be Careful 6 weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Coolant expansion tank bursts The plastic coolant expansion tank becomes brittle through thermal cycling and cracks or bursts — on almost every E46. A typical 3–4 cm crack appears along the housing edges. Risk of engine damage through overheating. Symptoms: Sudden coolant loss; coolant smell in engine bay; temperature rises sharply; steam from engine bay. from 120,000 km | Low |
Frequently Asked Questions
What problems and weaknesses does the BMW 3er E46 Cabrio have? +
The BMW 3er E46 as Cabrio has 41 known weaknesses, 7 vehicle-related.
Which engine is recommended? +
Be Careful: M52B28 (2.8L 24V), M54B25 (2.5L 24V), M54B30 (3.0L 24V). No engine is rated 'Good Choice'.
Is the BMW 3er E46 Cabrio worth buying used? +
Caution is advised with the BMW 3er E46 Cabrio — 3 of 6 engine variants are rated 'Stay Away!'.
Last updated: February 2026 · All information without guarantee