Smart #3 I (HX12) (2023 – 2025)

Reliability score : 8.3/10

The Smart #3 (HX12 generation) is a 100% electric compact SUV coupe, the result of a joint venture between Mercedes-Benz (in charge of design) and the Chinese group Geely (in charge of engineering and production). It is based on Geely's modular SEA (Sustainable Experience Architecture) platform, shared with the Smart #1, the Volvo EX30, and the Zeekr X. EXPERT CLARIFICATION REGARDING DIESEL: You requested to target the diesel engine. As an automotive expert, I must correct this expectation: the Smart #3 has never been produced with a diesel engine, nor any other internal combustion engine (petrol or hybrid). The Smart brand became 100% electric well before the launch of this model. Consequently, this fact sheet will focus on the actual electric powertrains that equip this vehicle, while hi

✅ Strengths

Distinctive and aerodynamic design (0.27 Cd)
Top-flight performance, particularly on the Brabus version
Technically highly advanced Geely SEA platform
Generous interior space for its size (long wheelbase)
Interior finish quality (Mercedes-Benz supervision)

⚠️ Weaknesses

Total absence of a Diesel/Internal Combustion engine for those resistant to electric vehicles
Driver assistance systems (ADAS) considered far too intrusive and noisy
Complex infotainment system ergonomics (too many sub-menus)
Poor rear visibility (the price of the coupe design)
Trunk volume (370 L) a bit tight for the category

🎯 Verdict

The Smart #3 is a highly convincing electric SUV coupe that benefits from Geely's excellent engineering and Mercedes-Benz's design flair. If you were looking for a diesel vehicle, you must absolutely turn to another manufacturer (such as the BMW X2 or the Audi Q3 Sportback), as Smart has definitively abandoned internal combustion engines. As an electric vehicle, the #3 is high-performing, well-finished, and rests on a solid hardware foundation. Its main flaws are software-related (annoying driver assistance systems), a point that is gradually improving via remote updates. It is a recommendable purchase for anyone looking for a stylish and dynamic EV.

Common issues

Motorisation diesel non disponible pour le Smart #3 (modèle 100% électrique). données insuffisantes

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Le Smart #3 est électrique. Aucune donnée diesel n'est applicable.

Estimated maintenance costs

Oil change	données insuffisantes (modèle électrique)
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Indicative estimates (independent garage, UK market). Prices vary by region and year.