Dacia Spring Common Problems & Reliability
The Dacia Spring reached the UK in 2024 as the cheapest new electric car on sale, a four-seat city hatch built in China on Renault Kwid underpinnings and re-engineered for right-hand drive. Its modest battery and 45 or 65 hp motor suit short urban trips rather than motorway mileage, and a kerb weight under a tonne keeps tyres, insurance and electricity costs low. Equipment is deliberately simple but includes a digital instrument cluster, rear parking sensors and, on Extreme, a 10.1-inch touchscreen. Reliability is straightforward by EV standards, with no combustion engine and a single-speed reducer, so the risks are software, charging hardware and 12V battery drain rather than mechanical wear. A one-star Euro NCAP rating from 2021 and limited refinement are the trade-offs. It suits second-car urban buyers and short commuters who can charge at home, not high-mileage drivers.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Dacia Spring Faults & Repair Costs
On-Board Charger (OBC) / DC-DC Converter 12V Battery Fault
The integrated power electronics box can fail to wake up the DC-DC converter during vehicle charging, causing the 12V auxiliary battery to discharge and preventing drive selection.
"Electrical Hazard" or "Check EV System" warning on cluster, Car fails to switch to READY mode, 12V auxiliary battery dead
- Check for dealer software updates to the power electronics unit
- Verify 12V battery voltage after AC charging session
Steering Column Intermediate Shaft Knocking
The lightweight steering column universal joint and intermediate shaft can develop play over urban potholes, creating a dull knocking sensation through the steering wheel.
Clunking through the steering wheel when turning at low speed, Vibration over speed bumps
- Turn steering wheel side-to-side with car stationary
- Listen for play in lower column joint in driver footwell
Electric Drive Reducer Gearbox Oil Seal Weeping
The single-speed reducer gearbox output shaft seals can develop minor oil weeping, allowing transmission lubricant to coat the drive axle casing.
Oil misting on gearbox casing undertray, Slight gear whine at 40–50 mph
- Inspect the reducer gearbox casing and driveshaft seals for oil leaks during MOT or pre-purchase inspection
Buying a used Dacia Spring? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.