Citroën C1 I (PM/PN) (2005 – 2014)

Reliability score : 8.5/10

The first-generation Citroën C1 (internal code PM for 3-door, PN for 5-door) is the result of the B-Zero joint venture between PSA Peugeot Citroën and Toyota. Built in the Kolín plant in the Czech Republic alongside its sister cars, the Peugeot 107 and Toyota Aygo, it is a quintessential A-segment city car. It received two facelifts: Phase 2 in 2009 (revised front bumper) and Phase 3 in 2012 (LED daytime running lights, new steering wheel). Praised for its ultra-low running costs and the bulletproof reliability of its Toyota-sourced petrol engine, it remains a highly sought-after used car for urban commuters and first-time drivers. Overall Rating: Excellent for its intended purpose.

✅ Strengths

Exceptional mechanical reliability of the 1.0 petrol engine (Toyota origin)
Extremely low running, insurance, and maintenance costs
Agile, lightweight (approx. 800 kg), and easy to park
Maintenance-free timing chain on the petrol engine
Parts are cheap and widely available due to shared platform

⚠️ Weaknesses

Frequent water leaks in the boot and cabin (faulty door and hatch seals)
Premature clutch wear on early models (pre-2009)
Sensodrive/EGS automated manual gearbox is jerky, slow, and prone to actuator failure
Poor soundproofing and basic, scratch-prone interior plastics
Tiny boot capacity (139 liters) and rear windows that only pop out (do not roll down)

🎯 Verdict

The Citroën C1 Mk1 is an outstanding used city car, provided you choose the 1.0i petrol engine paired with a manual gearbox. Thanks to its Toyota-engineered powertrain, mechanical reliability is stellar, and running costs are among the lowest in the automotive world. However, buyers must thoroughly inspect the car for water ingress in the boot and ensure the clutch has been replaced or upgraded. Avoid the 1.4 HDi diesel (prone to clogging in city traffic and irrelevant for this segment) and steer clear of the Sensodrive automated gearbox, which ruins the driving experience and adds unnecessary repair risks.