1.6 E-Tech (full hybrid)
2025–2026 · hybrid · 1598cc · 145hp
Engine codes: H4M, HMR
Reliability, common problems and owner reviews for the Dacia Bigster 1.6 E-Tech (full hybrid). Check this before you buy used.
The 1.6 E-Tech full hybrid (the naturally-aspirated 1.6 H4M paired with Renault's clever clutchless multi-mode hybrid gearbox and two electric motors — shared with the Captur/Clio E-Tech) gives an EV-like, smooth town drive and strong economy. The Jogger Hybrid 140 used this gearbox until Dacia replaced it with the Hybrid 155 in 2026. The 155 is a 1.8 and is not this page. The base 1.6 H4M petrol is a proven, robust Renault-Nissan unit with no turbo. The cautions sit with the novelty of the dog-clutch multi-mode transmission (newer, complex, higher diagnostic bar) and the hybrid battery (durable, warrantied). Well-maintained it's economical and refined, especially in town; buy with eyes open on the clever-but-newer hybrid gearbox and ensure software is up to date.
Same engine, other cars
This is the same physical engine (H4M) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Clutchless dog-clutch multi-mode transmission is clever but newer/complex; higher diagnostic bar.
Fix / Workaround: Ensure software updates; specialist support; warranty cover.
Repair cost: €150–€1600
Typically appears after: 110,000 km
HV battery is a long-term wear item but durable and warrantied; base 1.6 H4M is robust.
Fix / Workaround: Health-check on purchase.
Repair cost: €0–€1500
Typically appears after: 200,000 km
Mileage Thresholds
After 200,000 km: Robust 1.6 base; novel gearbox — maintain.
Pre-Purchase Checklist
- ☐EV-like town drive, strong economy
- ☐Base 1.6 H4M is proven/robust
- ☐Novel hybrid gearbox — software up to date
Frequently asked questions
Is the Dacia Bigster 1.6 E-Tech (full hybrid) reliable?
Maint. Sensitive — The 1.6 E-Tech full hybrid (the naturally-aspirated 1.6 H4M paired with Renault's clever clutchless multi-mode hybrid gearbox and two electric motors — shared with the Captur/Clio E-Tech) gives an EV-like, smooth town drive and strong economy. The Jogger Hybrid 140 used this gearbox until Dacia replaced it with the Hybrid 155 in 2026. The 155 is a 1.8 and is not this page. The base 1.6 H4M petrol is a proven, robust Renault-Nissan unit with no turbo. The cautions sit with the novelty of the dog-clutch multi-mode transmission (newer, complex, higher diagnostic bar) and the hybrid battery (durable, warrantied). Well-maintained it's economical and refined, especially in town; buy with eyes open on the clever-but-newer hybrid gearbox and ensure software is up to date.
What are the common problems and reviews for the Dacia Bigster 1.6 E-Tech (full hybrid)?
The most commonly reported problems: Multi-mode hybrid gearbox (novel), Hybrid battery (long life).
Is a used Dacia Bigster 1.6 E-Tech (full hybrid) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.