Skip to content
MotorFiable

BMW N20 vs 1.8 and 2.0 Zetec-E: which engine is more reliable?

According to our risk index, the 1.8 and 2.0 Zetec-E carries less risk than the BMW N20: 30/100 (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 1.8 and 2.0 Zetec-E has no documented serious faults.

Risk index

BMW N20

63

High risk · 2 serious faults

Risk index

1.8 and 2.0 Zetec-E

30

Moderate risk · 0 serious faults

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 1.8 and 2.0 Zetec-E reliable?

The 1.8 and 2.0 litre Zetec-E engines in the Focus I are simple naturally aspirated petrol engines that, according to the sources, have no recurring serious fault. The most frequently mentioned issue is the plastic thermostat housing, which deforms and leaks coolant; in addition, Ford issued a recall in 2000 to replace the oil filler cap on 1.8 and 2.0 units built up to December 1999.[3][4][5]

See the 3 of the 1.8 and 2.0 Zetec-E faults

Side-by-side comparison

Comparison of BMW N20 and 1.8 and 2.0 Zetec-E
BMW N201.8 and 2.0 Zetec-E
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,997 cm³—
TimingChainTiming belt (dry)
Power156–245 hp115–130 hp
Production2011–2017[1][6]1991–2004[3][7][8]
Reliability
Risk index (what is it?)63High risk30Moderate risk
Documented faults53
Of high or critical severity20
Worst severityCritical severityMedium 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. Medium severity: Plastic thermostat housing: coolant leaks
  2. Medium severity: Loose oil filler cap and oil leak onto the exhaust
  3. Low severity: Dirty idle control valve: unstable idle
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNoneNone
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]
  • 1.8 Zetec-E 16v 115 hp (Focus I, 1998-2004)[3][4]
  • 2.0 Zetec-E 16v 130 hp (Focus I, 1998-2004)[3][4][9]
  • 1.6 Zetec-E 16v 90 and 95 hp (Mondeo II, 1996-2000)[7][10]
  • 1.8 Zetec-E 16v 115 hp (Mondeo II, 1996-2000)[10]
  • 2.0 Zetec-E 16v 131 hp (Mondeo II, 1996-2000)[10]
  • 1.6 Zetec-E 16v 88-90 hp (Escort, 1992-2000)[7]
  • 1.8 Zetec-E 16v 105-116 hp (Escort, 1992-1998)[7]
  • 1.6 Zetec-E 16v 88-90 hp (Mondeo I, L1F and L1J, 1993-1996)[7][10]
  • 1.8 Zetec-E 16v 112-115 hp (Mondeo I, RKA and RKB, 1993-1996)[10]
  • 2.0 Zetec-E 16v 132-136 hp (Mondeo I, NGA, 1993-1996)[10]
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

1.8 and 2.0 Zetec-E

Other comparisons

With the BMW N20

With the 1.8 and 2.0 Zetec-E

Compare other engines

That is the comparison you are viewing: change one of the two engines.

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. Ford Focus MK1 – Typische Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · published 5 October 2023 · consulted 2 November 2026 · in German
  4. Fiabilité et pannes du Ford Focus 1 (1998-2004)fiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
  5. Ford Focus recall R/2000/003: oil filler cap may become looseAutoinsider (datos DVSA) · Other source · published 20 March 2000 · consulted 2 November 2026
  6. BMW N20Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  7. Ford Zeta engineWikipedia (inglés) · Other source · consulted 2 November 2026
  8. Ford FocusWikipedia (español) · Other source · consulted 2 November 2026 · in Spanish
  9. Ford Focus [MK1] [C170] (2002 - 2005) used car model guideExchange & Mart · Motoring press · consulted 2 November 2026
  10. Ford Mondeo 1993-2001: fiabilité et pannes (témoignages)fiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French