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M43 1.6, 1.8 and 1.9 vs 1.4 / 1.6 16v E-TEC II: which engine is more reliable?

According to our risk index, the 1.4 / 1.6 16v E-TEC II carries less risk than the M43 1.6, 1.8 and 1.9: 19/100 (low risk) versus 42/100 (moderate risk). The M43 1.6, 1.8 and 1.9 has 1 documented serious fault, the main one being «Failure of the plastic parts in the cooling system»; the 1.4 / 1.6 16v E-TEC II has no documented serious faults.

Risk index

M43 1.6, 1.8 and 1.9

42

Moderate risk · 1 serious fault

Risk index

1.4 / 1.6 16v E-TEC II

19

Low 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

18 sourcesHow we work

Is the M43 1.6, 1.8 and 1.9 reliable?

The M43 (1993-2002) is an 8-valve petrol four-cylinder with a timing chain that Autohints describes as one of BMW’s most durable engines of the nineties. The faults the sources cite are with ancillaries: plastic cooling parts, oil leaks from the gaskets, rough idle, ignition and, in some versions, the DISA valve.[1][2][3]

See the 5 of the M43 1.6, 1.8 and 1.9 faults

Is the 1.4 / 1.6 16v E-TEC II reliable?

The 1.4 and 1.6 16v GM Daewoo E-TEC II (first-generation Lacetti/Optra and Aveo) have a timing belt and, according to the Polish press, a moderate fault record. Documented issues are faulty valves in the first units (2004-2005), lambda sensor faults and a few cases of oil leaks or oil consumption.[4][5][6]

See the 3 of the 1.4 / 1.6 16v E-TEC II faults

Side-by-side comparison

Comparison of M43 1.6, 1.8 and 1.9 and 1.4 / 1.6 16v E-TEC II
M43 1.6, 1.8 and 1.91.4 / 1.6 16v E-TEC II
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingChainTiming belt (dry)
Power102–118 hp83–109 hp
Production1993–2002[2][7][8]2004–2011[9][10][11][12][13]
Reliability
Risk index (what is it?)42Moderate risk19Low risk
Documented faults53
Of high or critical severity10
Worst severityHigh severityMedium severity
Main faults
  1. High severity: Failure of the plastic parts in the cooling system
  2. Medium severity: DISA intake manifold valve with play and noise
  3. Low severity: Oil leaks from gaskets (rocker cover, front cover and crankcase breather)
  1. Medium severity: Faulty valves and ignition faults in the first units (2004-2005)
  2. Low severity: Lambda sensor faults
  3. Low severity: Oil consumption and oil leaks
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.4 and 1.5 8v SOHC (Aveo, 2005-2011)[6][13]
  • 1.5 and 1.6 16v DOHC 100-106 hp (A15DMS/A16DMS, Daewoo Lanos and Nubira, 1997-2008)[14][15]
With cautionVersions to be cautious about
  • M43B16, 1.6 litre (102 hp; 1993-1999)[1][2][3]
  • M43B18, 1.8 litre (115 hp; 1993-1999)[1][16]
  • M43TUB19, 1.9 litre (105 hp; 1998-2002)[1][3][17]
  • M43TUB19, 1.9 litre (118 hp; 1998-2002)[1][3][17]
  • 1.4 16v DOHC 95-101 hp (F14D4/L95, 2004-2011)[4][5][13]
  • 1.6 16v DOHC 103-109 hp (L91/LXT, 2004-2011)[5][13][18]
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

M43 1.6, 1.8 and 1.9

1.4 / 1.6 16v E-TEC II

Other comparisons

With the M43 1.6, 1.8 and 1.9

With the 1.4 / 1.6 16v E-TEC II

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 M43B18 1.8L 115hp inline-4 cylinder engineAutoHints · Technical documentation · consulted 2 November 2026
  2. Der BMW M43 Motor: Technische Daten, Probleme, Haltbarkeit & FahrzeuglisteCarWiki.de · Buying guide or workshop · consulted 2 November 2026 · in German
  3. BMW M43: problemas conocidosEnginescope · Buying guide or workshop · consulted 2 November 2026
  4. Chevrolet Lacetti 1.4 16V - Niełatwo zdobyć zaufanieAuto Świat · Motoring press · published 19 November 2007 · consulted 2 November 2026 · in another language
  5. Bez fajerwerków - Chevrolet Lacetti (2003-2010)AutoCentrum.pl · Motoring press · published 7 April 2012 · consulted 2 November 2026 · in another language
  6. Czy warto kupić: używany Chevrolet Aveo (od 2002 do 2011)AutoCentrum.pl · Motoring press · published 5 March 2013 · consulted 2 November 2026 · in another language
  7. BMW M43Wikipedia (inglés) · Encyclopedia · consulted 2 November 2026
  8. BMW M43Wikipedia (alemán) · Encyclopedia · consulted 2 November 2026 · in German
  9. GM Family 1 engineWikipedia · Encyclopedia · consulted 2 November 2026
  10. Chevrolet LacettiWikipedia · Encyclopedia · consulted 2 November 2026
  11. Chevrolet LacettiWikipedia (de) · Encyclopedia · consulted 2 November 2026 · in German
  12. Chevrolet Aveo (T200)Wikipedia · Encyclopedia · consulted 2 November 2026
  13. Używany Chevrolet Aveo T200/T250 - typowe awarie i problemyWP Autokult · Motoring press · published 28 January 2012 · consulted 2 November 2026 · in another language
  14. Daewoo Nubira: zwawa, pakowna i taniaAuto Świat · Motoring press · published 20 February 2006 · consulted 2 November 2026 · in another language
  15. Gdy koszty grają rolę - Daewoo/FSO Lanos (1997-2008)AutoCentrum.pl · Motoring press · published 4 January 2012 · consulted 2 November 2026 · in another language
  16. BMW 3 Series E36 Reliability Guide: Everything You Need to Know Before BuyingEuro Premium Parts · Technical documentation · consulted 2 November 2026
  17. 316i M43: 17 Jahre, Standhaftigkeit erhöhen (E46)BMW-Syndikat (foro) · Owners' forum · consulted 2 November 2026 · in German
  18. W pierwszych silnikach 1,6 l przecierały się zawory (Chevrolet Lacetti)AutoCentrum.pl (usterki) · Owners' forum · consulted 2 November 2026 · in another language