2003–2005 Smart Roadster (452)
Browse our directory of 2003–2005 Smart Roadster (452) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
Registration Directory
Common Problems & Reliability
The 2003–2005 Smart Roadster (452) has 3 known issues. 2 of these are classified as serious faults that could be expensive to repair.
Catastrophic Water Ingress
SeriousWater enters through wing mirrors, door seals, the bulkhead, and the rear quarter lights. This often ruins the SAM unit and the carpets.
Symptoms: Wet carpets, Mist on the inside of the glass...
Est. repair cost: £100–£1,500
SAM Unit Failure
SeriousWater tracks down the wiring loom from the wiper tray and enters the SAM unit. This is the most common cause of "dead" Roadsters.
Symptoms: Horn sounding continuously, Car won't turn off...
Est. repair cost: £500–£1,200
Snapped Aircon Pipes
MinorThe AC pipes are prone to vibration-induced cracks, leading to total loss of refrigerant.
Symptoms: AC not cold, Visible oily residue on the pipes near the compressor
Est. repair cost: £250–£400
Buying Tips for the 2003–2005 Smart Roadster (452)
- ✓Assume the car leaks unless proven otherwise. Water ingress is the Roadster's biggest enemy.
- ✓Check the SAM unit (behind the dash) and the ECU (on the airbox) for signs of water damage.
- ✓The soft top (canopy) can shrink over time; check that it seals properly at the side rails.
- ✓Listen for the turbo "whistle"; a loud siren noise indicates a failing turbo.
Check Any Vehicle
Don't see your specific car listed? Enter any UK registration number for an instant vehicle history check — including MOT history, tax status, finance check, and write-off data.
Free Vehicle Check