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1.6 CRDi vs 1.8/2.2 DI-D: which engine is more reliable?

According to our risk index, the 1.8/2.2 DI-D carries less risk than the 1.6 CRDi: 46/100 (moderate risk) versus 70/100 (high risk). The 1.6 CRDi has 4 documented serious faults, the main one being «MHSG belt tensioner and crankshaft pulley failure (48V mild hybrid)»; the 1.8/2.2 DI-D has 3 documented serious faults, the main one being «Clogged particulate filter and oil dilution».

Risk index

1.6 CRDi

70

High risk · 4 serious faults

Risk index

1.8/2.2 DI-D

46

Moderate risk · 3 serious faults

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

18 sourcesHow we work

Is the 1.6 CRDi reliable?

The U2 D4FB (2009-2018) is a generally robust diesel if well maintained, with known turbo failures in the early units and timing chain problems from 120,000-150,000 km. Its successor, the Smartstream (U3 D4FE, from 2018), has a good reputation, except in the 48V mild hybrid version, which has a belt tensioner and crankshaft pulley fault that can destroy the engine.[1][2][3]

See the 6 of the 1.6 CRDi faults

Is the 1.8/2.2 DI-D reliable?

Yes, in general: Mitsubishi's own 1.8 DI-D (4N13) and 2.2 DI-D (4N14) diesels have a reputation for reliability compared with the Volkswagen and PSA engines they replaced in 2010. Their best-documented fault is a clogged particulate filter with oil dilution on short journeys, along with occasional cases of injector, turbo and balance shaft problems. Do not confuse them with the PSA 2.2 HDi that the Outlander used earlier, shared with the C-Crosser and the Peugeot 4007.[4][5][6][7]

See the 4 of the 1.8/2.2 DI-D faults

Side-by-side comparison

Comparison of 1.6 CRDi and 1.8/2.2 DI-D
1.6 CRDi1.8/2.2 DI-D
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,582 cm³—
TimingChainChain
Power90–136 hp116–177 hp
Productionsince 2009[1][8][9][10]since 2010[4][11][12][13]
Reliability
Risk index (what is it?)70High risk46Moderate risk
Documented faults64
Of high or critical severity43
Worst severityCritical severityHigh severity
Main faults
  1. Critical severity: MHSG belt tensioner and crankshaft pulley failure (48V mild hybrid)
  2. Critical severity: Timing chain stretch
  3. High severity: Premature variable-geometry turbo (VGT) failure
  1. High severity: Clogged particulate filter and oil dilution
  2. High severity: Turbocharger wear at high mileage
  3. Medium severity: Soot fouling of injectors and EGR valve
Most expensive documented repairup to €1,800Particulate filter (DPF) blocked in urban usePublished figure[14]No reliable data
Which versions to buy
BuyRecommended versions
  • Smartstream 1.6 CRDi U3 (D4FE, 115-136 hp, without mild hybrid, from 2018)[2][15]
None
With cautionVersions to be cautious about
  • 1.6 CRDi U2 (D4FB, 90-136 hp, sold in Spain from 2010 to ~2018)[1][16][17]
  • Smartstream 1.6 CRDi 48V mild hybrid (D4FE MHEV, 136 hp, from ~2019)[3][18]
  • 1.8 DI-D 116 (4N13, 2010-2019)[6]
  • 1.8 DI-D 150 (4N13, 2010-2015)[6]
  • 2.2 DI-D 150 automatic (4N14, 2013-2015)[6]
  • 2.2/2.3 DI-D 177 MIVEC (4N14, 2010-2021)[7]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

1.6 CRDi

See the 16 models with the 1.6 CRDi

1.8/2.2 DI-D

Other comparisons

With the 1.6 CRDi

With the 1.8/2.2 DI-D

Compare other engines

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Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Motor Kia y Hyundai 1.6 CRDI (D4FB): ficha tecnica, problemas y tuningMotordinámico · Technical documentation · consulted 26 September 2026 · in Spanish
  2. Kia Ceed III: Bekannte Probleme & RückrufeGebrauchtwagenberater · Other source · consulted 26 September 2026 · in German
  3. Kia / Hyundai 1.6 CRDi MHEV Engine FailuresDOHC (especialista en reconstrucción de motores) · Technical documentation · consulted 26 September 2026
  4. Mitsubishi OutlanderWikipedia (inglés) · Other source · consulted 27 September 2026
  5. Mitsubishi OutlanderWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  6. Mitsubishi ASX – Typische Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
  7. Mitsubishi Outlander: bekannte Probleme und MängelGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
  8. Hyundai U engineWikipedia · Other source · consulted 26 September 2026
  9. Hyundai Smartstream engineWikipedia · Other source · consulted 26 September 2026
  10. Hyundai i30 Kombi 1.6 CRDi 48V-Mildhybrid Trend (10/20-01/22): Technische Daten, Bilder, PreiseADAC · Technical documentation · consulted 26 September 2026 · in German
  11. Mitsubishi 4N1 engineWikipedia (inglés) · Other source · consulted 27 September 2026
  12. Mitsubishi ASXWikipedia (inglés) · Other source · consulted 27 September 2026
  13. Mitsubishi ASXWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  14. Kia Ceed 1.6 Crdi Problemas | Fallos y averías más frecuentesTotalRenting · Other source · consulted 26 September 2026 · in Spanish
  15. Kia Ceed im TÜV-Check 2026: Schwachstellen, Mängel und ProblemeAUTO BILD · Motoring press · published 2026 · consulted 26 September 2026 · in German
  16. Kia and Hyundai 1.6 CRDI (D4FB) engineEngineDNA · Other source · consulted 26 September 2026
  17. Best Hyundai Kia 1.6 CRDI Mods & Upgrades Guide to D4FB TuningTorqueCars · Other source · consulted 26 September 2026
  18. KIA SPORTAGE 2023 - vehicle recallsGOV.UK (Driver and Vehicle Standards Agency) · Official body · consulted 26 September 2026