Dacia Bigster 1
Weaknesses, engine ratings and buying advice
The Dacia Bigster (from late 2024) is the brand's largest and most expensive model to date — new from around £21,000 / €20,500, putting it well above the Duster but still below almost every rival in the compact SUV class. It shares the CMF-B platform with the Duster III, Renault Captur and Clio — Renault engineering in Dacia packaging.
The car is too new for solid long-term data — market launch was late 2024 and most examples have fewer than 20,000 miles on the clock. That said, early ownership patterns are already visible.
Engine choice: The HR12VDV 1.2 TCe mild hybrid (140 hp) is the bread-and-butter option — light 48V mild hybrid, manual gearbox, sensible on paper. Early owners report sporadic engine warning lights with no clear root cause — hardware or software, still unclear. The ECO-G LPG variant (also 140 hp) adds factory autogas to the same base — compelling in markets with cheap LPG, fully covered by warranty.
Approach the HR18DDT 1.8 E-Tech full hybrid (155 hp) with caution. The Renault E-Tech automatic gearbox carries a known shaft seal defect across the broader family (Clio, Captur, Megane, Arkana) — gearbox oil can enter the electric motor, potentially a total write-off ($2,000–14,000). At least one Bigster owner experienced gearbox failure at just 1,100 km. The slow, hesitant gearchanges are normal E-Tech behaviour, not a fault — but the seal risk is real.
Known early issues (all variants): - Software recall: False 'stop the vehicle immediately' engine warning — free dealer fix, no actual engine damage - Rear seat lever: Bowden cable incorrectly routed at the factory, lever jams or won't engage — common, straightforward warranty fix - Tailgate gas strut: Detaches from body ball joint on some units — assembly fault, warranty replacement - Infotainment: Sluggish response, intermittent CarPlay drops, reversing camera occasionally goes dark for several days - Wind noise above 60 mph: A-pillar and insufficient sound deadening. Better than Duster but nowhere near segment average
What works well: Top Gear's long-term test covered 13,000+ miles with zero mechanical failures. Oil consumption is essentially nil. Body construction is solid. Best-in-class safety value — 5-star Euro NCAP at this price point.
Who it's for: Buyers who want a big SUV for little money and don't need premium materials or polished ride quality. The Bigster is honest transport with modern powertrains.
Test-drive checklist: Software updates current? Check rear seat lever from boot. E-Tech Hybrid: feel for hesitation and shunting in the gearbox, look for oil seeping at the gearbox face. Any stored ELEC-system warnings in fault memory?
Market 2026: Bigster 1.2 TCe 140 manual new from ~$22,000, used examples barely below $19,000. E-Tech Hybrid 155 new from ~$25,500. LPG variant approx. $23,000. Insider pick: 1.2 TCe 140 manual — solid mild hybrid without the E-Tech gearbox risk; 2025 pre-reg examples with service history from ~$20,000.
140 PS
Bigster · Benzin
Most powerful Dacia ever
Fun to Drive!140 PS
1.2L Turbo Mild Hybrid LPG
2 weaknesses
Good Choice156 PS
1.8L Hybrid Benzin
5 weaknesses
Stay Away!Engine Overview
The Dacia Bigster 1 is available with 3 engine variants — from 140 to 156 hp.
48V mild hybrid with 1.2L turbo, higher output level
- ! Sporadic engine warning light
Isolated Bigster owners report sporadically illuminating engine warning lights and injection fault messages without an identifiable cause. It is unclear whether this is a hardware or software issue.
Symptoms: Isolated Bigster owners report sporadically illuminating engine warning lights and injection fault messages without an identifiable cause - i Too new — no substantiated long-term data
The HR12VDV has been on the market since early 2025. No substantiated weak points from forums or workshops are yet available. A reliable assessment will be possible at the earliest in 2026/2027.
Symptoms: The HR12VDV has been on the market since early 2025
48V mild hybrid with 1.2L turbo + ECO-G LPG system
- ! Sporadic engine warning light
Isolated Bigster owners report sporadically illuminating engine warning lights and injection fault messages without an identifiable cause. It is unclear whether this is a hardware or software issue.
Symptoms: Isolated Bigster owners report sporadically illuminating engine warning lights and injection fault messages without an identifiable cause - i Too new — no substantiated long-term data
The HR12VDV has been on the market since early 2025. No substantiated weak points from forums or workshops are yet available. A reliable assessment will be possible at the earliest in 2026/2027.
Symptoms: The HR12VDV has been on the market since early 2025
E-Tech full hybrid: 1.8L engine + electric motor, combined output 156 hp
- !! Gearbox failure under 2,000 km
Bigster full hybrid owners report gearbox failure after only 1,100 km. The multi-mode gearbox is prone to delayed gear engagement with torque interruptions, especially between 3rd and 4th gear.
Symptoms: Bigster full hybrid owners report gearbox failure after only 1,100 km - !! Oil seal e-motor/gearbox (E-Tech system heritage) from 60,000 km
Like all Renault E-Tech vehicles, affected by the known shaft seal issue. Gearbox oil can enter the electric motor — total economic loss possible.
Symptoms: Like all Renault E-Tech vehicles, affected by the known shaft seal issue - !! Cluster of electrical failures in the early phase
Early buyers report multiple electrical issues in the first weeks: gearbox, dashboard, air conditioning, parking sensors. Several vehicles had to return to the dealer shortly after purchase.
Symptoms: Early buyers report multiple electrical issues in the first weeks: gearbox, dashboard, air conditioning, parking sensors
+ 2 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| ELEC system warning with cruise control failure Owners of the TCe 140 Mild Hybrid report a recurring 'ELEC system check' warning that deactivates the cruise control. Cause is often battery issues or corroded terminals, sometimes also sensor contamination. Symptoms: Warning message 'ELEC system check' in the display, cruise control switches off, restarting helps temporarily from 5,000 km | Low | |
| Apple CarPlay connection drops The infotainment loses CarPlay connectivity regularly, especially with iPhone 12–14. Dealers confirmed the root cause is excessive current draw at the USB port. A software update is pending. Symptoms: CarPlay disconnects after a few minutes, cable must be re-inserted, volume control stops working during active navigation | Low | |
| Sluggish infotainment system The touchscreen responds with a noticeable delay — several seconds may pass between touch input and reaction. The reversing camera occasionally fails completely for several days, and parking sensors then also stop working. Symptoms: Delayed touchscreen response, intermittent loss of reversing camera and parking sensors, traffic sign recognition drops out sporadically | Low |
Known Problems and Issues +
A total of 17 weaknesses have been documented for the Dacia Bigster 1 (2025–2026) — 9 engine-related and 8 vehicle-related. One problem engine: HR18DDT (1.8L Hybrid). Typical issues affect Electronics, Body, Other, Interior. Considered reliable: HR12VDV-103kW (1.2L Turbo Mild Hybrid), HR12VDV-103kW-LPG (1.2L Turbo Mild Hybrid).
Bigster (HR18DDT, 2025–2026) — Stay Away!: Gearbox failure under 2,000 km, Oil seal e-motor/gearbox (E-Tech system heritage), Cluster of electrical failures in the early phase. Power: 156 PS.
What to watch out for with the Dacia Bigster? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Dacia Bigster 1 have? +
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Which Dacia Bigster 1 engine is the most reliable? +
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Last updated: February 2026 · All information without guarantee