Smart #3 HX31
Weaknesses, engine ratings and buying advice
Engine Overview
The Smart #3 HX31 is available with 2 engine variants — from 272 to 428 hp.
Geely SEA platform dual motor (Brabus). 66 kWh battery, all-wheel drive. Brabus performance variant.
No known weaknesses documented.
Geely SEA platform single motor. 66 kWh battery, rear-wheel drive. Completely new Smart generation, developed with Geely.
No known weaknesses documented.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Software Instability: Profile Saving and Spontaneous Logouts The vehicle software saves driver profiles (seat, steering wheel, mirrors) unreliably. Repeated spontaneous logouts from the user profile occur. The manufacturer describes many defects as 'series standard'. Symptoms: Seat position and settings are reset after a journey, unexpected logout from the user profile | Low | |
| Navigation System Fails Repeatedly Since April 2024, Smart #3 owners have reported navigation failures. Traffic sign recognition deteriorated after the July 2024 update. No permanent fix available so far. Symptoms: Navigation cannot calculate a route, stays offline, shows outdated charging station data | Low | |
| Traffic Sign Recognition Unreliable The traffic sign recognition incorrectly displays low speed limits on motorways. Partially worsened after the July 2024 software update. Persistent warning beeps until manually deactivated. Symptoms: Wrong speed limits shown on display, recurring warning signals at permitted speed | Low |
Alternatives
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Hyundai Tucson NX4-FL
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Known Problems and Issues +
A total of 6 weaknesses have been documented for the Smart #3 HX31 (2024–2026). Typical issues affect Electronics, Other, Body, Interior.
What to watch out for with the Smart #3? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Smart #3 HX31 have? +
What should I look for when buying a used Smart #3 HX31? +
Which engine is recommended? +
Which Smart #3 HX31 engine is the most fun? +
Is the Smart #3 HX31 worth buying used? +
What horsepower variants are available for the Smart #3 HX31? +
Last updated: February 2026 · All information without guarantee