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BMW N20 vs 1.0 TCe / SCe: which engine is more reliable?

According to our risk index, the 1.0 TCe / SCe carries less risk than the BMW N20: 41/100 (moderate risk) versus 63/100 (high risk). The BMW N20 has 2 documented serious faults, the main one being «Timing chain guide and tensioner wear (2011-2015)»; the 1.0 TCe / SCe has 1 documented serious fault, the main one being «LPG (ECO-G) system faults and tank recall».

Risk index

BMW N20

63

High risk · 2 serious faults

Risk index

1.0 TCe / SCe

41

Moderate risk · 1 serious fault

Lower risk

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

10 sourcesHow we work

Is the BMW N20 reliable?

The BMW N20 (2011-2017) was the first turbocharged four-cylinder with which BMW replaced its naturally aspirated six-cylinders in models such as the 320i, 328i and X3, and it is generally mechanically sound. Its best-documented weak point is the timing chain guides and tensioner on units built before 2015; oil leaks, the electric water pump and, to a lesser extent, the turbo and the high-pressure fuel pump are also known issues.[1][2]

See the 5 of the BMW N20 faults

Is the 1.0 TCe / SCe reliable?

The 1.0 TCe/SCe (H4D/H4Dt) is a simply designed three-cylinder with reasonable reliability. Its most-cited fault is a noise or vibration from the turbo wastegate; the ECO-G (LPG) version adds its own gas-management faults and a 2023 recall over a risk of leaks and fire from the tank. An isolated case of a failed high-pressure pump is also documented, and no oil consumption pattern.[3][4][5]

See the 4 of the 1.0 TCe / SCe faults

Side-by-side comparison

Comparison of BMW N20 and 1.0 TCe / SCe
BMW N201.0 TCe / SCe
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,997 cm³999 cm³
TimingChainChain
Power156–245 hp65–117 hp
Production2011–2017[1][6]since 2019[7][8]
Reliability
Risk index (what is it?)63High risk41Moderate risk
Documented faults54
Of high or critical severity21
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: Timing chain guide and tensioner wear (2011-2015)
  2. Critical severity: Electric water pump failure (BMW campaign in the US over fire risk)
  3. Medium severity: Oil leaks from the rocker cover gasket and the filter housing
  1. Critical severity: LPG (ECO-G) system faults and tank recall
  2. Medium severity: Metallic noise or vibration from the turbo wastegate
  3. Medium severity: Failed high-pressure fuel pump (isolated case)
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.0 SCe 65/75 (H4D, 2019-present)[3][9]
With cautionVersions to be cautious about
  • N20B20 156 hp (115 kW, 2013-2016)[2]
  • N20B20B 184 hp (135 kW, 2011-2017)[2]
  • N20B20 218 hp (160 kW, 2012-2015)[2]
  • N20B20A 245 hp (180 kW, 2011-2017)[2]
  • 1.0 TCe 90/100 (H4Dt, 2019-present)[3][9]
  • 1.0 TCe 110 (H4Dt, 2021-present)[10]
  • 1.0 ECO-G 100 (H4Dt + LPG, 2020-present)[3][4][10]
  • 1.0 DIG-T / IG-T 100-117 (HR10DDT, Nissan, 2017-present)[5]
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

BMW N20

See the 8 models with the BMW N20

1.0 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

Other comparisons

With the BMW N20

With the 1.0 TCe / SCe

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. BMW N20Wikipedia (inglés) · Other source · consulted 27 September 2026
  2. BMW N20 Engine: Pros, Cons, Reliability, Tuning, and Maintenance GuideBMW BLOG · Motoring press · published 8 June 2025 · consulted 27 September 2026
  3. Fiabilité et pannes du Dacia Sandero 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  4. Dacia et Renault – nouveau rappel : fuite du réservoir GPL, risque d'incendie !Motorsactu · Motoring press · published 12 November 2023 · consulted 27 September 2026 · in French
  5. Fiabilité et pannes du Nissan Juke 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  6. BMW N20Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  7. Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  8. Nissan JukeWikipedia (inglés) · Other source · consulted 27 September 2026
  9. Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  10. Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French