1.6 CRDi (D4FB)
2017–2022 · diesel · 1582cc · 136hp
Engine codes: D4FB, D4FD, D4FE
Reliability, common problems and owner reviews for the Hyundai i30 III 1.6 CRDi (D4FB). Check this before you buy used.
The 1.6 CRDi (D4FE, with 48V mild-hybrid — the well-proven U-line diesel shared across the i30/Kona/Ceed/Tucson) is the high-mileage Sportage V choice: refined, genuinely economical and dependable. Standard modern-diesel cautions: DPF clogging on short trips, EGR sooting, injector and turbo attention at high mileage, AdBlue/SCR, and the 48V starter-generator to keep healthy. It's a sound engine that mostly suffers only from short urban-only use that never lets the DPF regen. For a motorway commuter it's a low-thirst long-hauler — buy on oil, DPF and AdBlue history.
Same engine, other cars
This is the same physical engine (D4FB) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
DPF clogs and EGR soots on urban use; AdBlue/SCR on later cars.
Fix / Workaround: Motorway regens; clean EGR; diagnose SCR.
Repair cost: €250–€1000
Typically appears after: 140,000 km
Injector and turbo attention at higher mileage.
Fix / Workaround: Injector test; check turbo.
Repair cost: €200–€1200
Typically appears after: 170,000 km
DPF clogs and EGR soots on urban use; AdBlue/SCR on later cars.
Fix / Workaround: Motorway regens; clean EGR; diagnose SCR.
Repair cost: €300–€1100
Typically appears after: 130,000 km
Injectors wear with mileage.
Fix / Workaround: Injector test; recon/replace.
Repair cost: €200–€900
Typically appears after: 160,000 km
Injector and turbo attention at high miles; 48V starter-generator.
Fix / Workaround: Injector test; check turbo; diagnose MHEV.
Repair cost: €200–€1200
Typically appears after: 170,000 km
Mileage Thresholds
After 200,000 km: Economical long-hauler with care.
After 160,000 km: DPF + injector window.
Pre-Purchase Checklist
- ☐Best for motorway miles
- ☐Same D4FB as Ceed / Kona / i40
- ☐Oil + DPF history
- ☐Shared U-line diesel (i30/Tucson)
- ☐T-GDI lower-hassle for town
- ☐Same D4FE as i30 / Kona / Sportage
- ☐Oil + DPF + AdBlue history
- ☐Same D4FB as i30 / Kona / Sportage
- ☐Same D4FE as Tucson / i30 / Kona
Frequently asked questions
Is the Hyundai i30 III 1.6 CRDi (D4FB) reliable?
Maint. Sensitive — The 1.6 CRDi (D4FE, with 48V mild-hybrid — the well-proven U-line diesel shared across the i30/Kona/Ceed/Tucson) is the high-mileage Sportage V choice: refined, genuinely economical and dependable. Standard modern-diesel cautions: DPF clogging on short trips, EGR sooting, injector and turbo attention at high mileage, AdBlue/SCR, and the 48V starter-generator to keep healthy. It's a sound engine that mostly suffers only from short urban-only use that never lets the DPF regen. For a motorway commuter it's a low-thirst long-hauler — buy on oil, DPF and AdBlue history.
What are the common problems and reviews for the Hyundai i30 III 1.6 CRDi (D4FB)?
The most commonly reported problems: DPF / EGR (short trips), Injector / turbo (high miles), DPF / EGR / AdBlue, Injector wear, Injector / turbo / 48V.
Is a used Hyundai i30 III 1.6 CRDi (D4FB) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.