Smart Fortwo III (453) (2014 – 2019)

Reliability score : 6.2/10

The third-generation Smart Fortwo (code name 453) marks a major turning point in the model's history. Developed in partnership with Renault (it shares about 70% of its components with the Twingo III), it retains its rear-engine, rear-wheel-drive architecture, as well as its iconic length of 2.69 m. Its record turning circle (8.69 m) makes it the undisputed queen of the city. The most notable improvement is the abandonment of the disastrous single-clutch automated manual gearbox (Softouch) in favor of a manual gearbox or an excellent dual-clutch gearbox (Twinamic). ⚠️ CRUCIAL NOTE ON THE DIESEL ENGINE: Unlike the 450 and 451 generations which offered the famous 0.8 cdi engine, the Smart Fortwo 453 was NEVER marketed in a diesel version. The Daimler group abandoned diesel on this model due t

✅ Strengths

Exceptional turning circle (8.69 m), unbeatable in the city
Twinamic dual-clutch gearbox (finally a true, smooth, and responsive automatic gearbox)
Surprising front-seat roominess for its size
Much safer and more comfortable road handling than the 451 generation
Still iconic customization and design

⚠️ Weaknesses

Total absence of a diesel engine (for heavy urban drivers/fleets)
Very high TÜV defect rate at 3 years (21.5%), among the worst in the segment
Mediocre What Car? reliability score (2/5, 35% of faults reported)
Tiny and impractical trunk (engine located underneath, heating the floor)
Soundproofing on highways (wind and road noise)
High purchase price and maintenance costs (Mercedes-Benz network)

🎯 Verdict

The Smart Fortwo III (453) is a paradoxical city car. In terms of driving pleasure, it corrects the worst flaws of its ancestors: the Twinamic gearbox is a delight compared to the old Softouch, and comfort takes a leap forward. However, for buyers looking for a diesel, this model is a dead end, as the engine was permanently abandoned. In terms of reliability, the results are very mixed. While the ADAC notes an improvement in immobilizing breakdowns (4.1/1000) compared to the 450/451 generations, the German TÜV severely penalizes it with a defect rate of 21.5% at 3 years, and What Car? gives it a very poor 2/5. Cooling problems on the 0.9 TCe and structural recalls (roof, windshield, steering) urge caution. Buying advice: Avoid the early production 2014-2015 models. Favor a 2017 or newer 0.9 90 hp Twinamic model, with a clear maintenance history (ideally outside the Mercedes network to reduce costs). The electric version (EQ) is excellent for the city, provided you check the condition of the onboard charger.