- Engine / equipment
- smart fortwo 450 (0.6 / 0.7 turbo and 0.8 cdi)
- Period mentioned
- 1998–2007
- Symptoms
- Jerky shifts (especially when warm or in traffic) or the gearbox refusing to shift; oil leaks from the head and valve cover; on early 0.6 engines, oil consumption and serious engine failures, sometimes before 100,000 km; rust on the frame, brake lines and exhaust.
- Possible cause described
- The electric clutch and shift actuator is the most frequent fault and needs a correct adaptation after any work. The early 599 cc engines were known for serious failures; they improved with the 0.7 in mid-2003.
- Check for the garage
- Work out whether the shifting fault is mechanical (clutch) or electronic (actuator, sensors) and always run the guided adaptation; measure oil consumption; check for rust.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Smart
0.6-litre engine and automated gearbox on the smart fortwo 450
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
Work out whether the shifting fault is mechanical (clutch) or electronic (actuator, sensors) and always run the guided adaptation; measure oil consumption; check for rust.
What are the symptoms?
Jerky shifts (especially when warm or in traffic) or the gearbox refusing to shift; oil leaks from the head and valve cover; on early 0.6 engines, oil consumption and serious engine failures, sometimes before 100,000 km; rust on the frame, brake lines and exhaust.
Which cars and years does it affect?
- Brands
- Smart
- Engine / equipment
- smart fortwo 450 (0.6 / 0.7 turbo and 0.8 cdi)
- Period mentioned
- 1998–2007
Taking it to a garage?
Models with this entry
- Smart fortwo (450)2000–2007
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