2.0 TSI / TFSI vs BMW N43/N46: which engine is more reliable?

According to our risk index, the 2.0 TSI / TFSI carries less risk than the BMW N43/N46: 54/100 versus 59/100 (both high risk). The 2.0 TSI / TFSI has 2 documented serious faults, the main one being «High oil consumption»; the BMW N43/N46 has 1 documented serious fault, the main one being «Wear and breakage of the timing chain guides».

Risk index

2.0 TSI / TFSI

High risk · 2 serious faults

Lower risk

Risk index

BMW N43/N46

High risk · 1 serious fault

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

Reviewed on 27 September 202616 sources How we work

Is the 2.0 TSI / TFSI reliable?

It depends above all on the generation. The earliest units (2008-2012, without Valvelift) have more oil consumption complaints and somewhat more chain and tensioner wear; from 2012 the Valvelift design reduced oil consumption but kept carbon build-up on the intake valves as a weak point until, around 2016, supplementary indirect injection was added. The thermostat housing with the integrated water pump leaks coolant in several generations.^{[1][2][3][4][5]}

See the 5 of the 2.0 TSI / TFSI faults

Is the BMW N43/N46 reliable?

The BMW N43 and N46 (2004-2012) are naturally aspirated four-cylinder engines fitted to the 1 Series E87, 3 Series E90, X1 E84 and Z4 E85/E86, among others. They have a reputation for being solid if properly maintained, but share well-known wear of the timing chain guides and tensioner, of the Valvetronic and of the VANOS valves; the direct-injection N43 adds documented failures of the injectors, ignition coils and the NOx sensor.^[6][7][8][9]

See the 4 of the BMW N43/N46 faults

Side-by-side comparison

Comparison of 2.0 TSI / TFSI and BMW N43/N46
Item	2.0 TSI / TFSI	BMW N43/N46
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,984 cm³	—
Timing	Chain	Chain
Power	170–320 hp	121–170 hp
Production	since 2008^[1][10]	2004–2012^{[6][7][11][12]}
Reliability
Risk index (what is it?)	54High risk	59High risk
Documented faults	5	4
Of high or critical severity	2	1
Worst severity	Critical severity	Critical severity
Main faults	High severity: High oil consumption Critical severity: Timing chain and tensioner wear Medium severity: Carbon build-up on the intake valves	Critical severity: Wear and breakage of the timing chain guides Medium severity: Injector, ignition coil and NOx sensor failures (N43) Medium severity: Wear of the Valvetronic and the VANOS solenoid valves
Most expensive documented repair	up to €4,000High oil consumptionPublished figure^[13]	No reliable data
Which versions to buy
BuyRecommended versions	2.0 TSI/TFSI Gen 3B / evo, with added indirect injection (2016 onwards, 190-320 hp)^[1][5][14]	None
With cautionVersions to be cautious about	2.0 TSI/TFSI Gen 1, without Valvelift (2008-2012, 170-220 hp)^{[2][3][14][15]} 2.0 TSI/TFSI Gen 2/3, with Valvelift and direct injection only (2012-2016, 180-230 hp)^[2][3][14]	N46B20 127-148 hp, indirect injection (2004-2007)^[8][9] N46NB20 150-170 hp, revised ECU (2006-2012)^[8][9][16] N43B16 121 hp, 1.6 litres (2007-2011)^[6][8] N43B20 121-168 hp, 2.0 litres (2007-2013)^[6][8]
AvoidVersions to avoid	None	None

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

Cars that each one is fitted to

2.0 TSI / TFSI

See the 42 models with the 2.0 TSI / TFSI

BMW N43/N46

Other comparisons

With the 2.0 TSI / TFSI

With the BMW N43/N46

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Sources

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

Volkswagen EA888 engineWikipedia (inglés) · Other source · consulted 26 September 2026
Fiabilité Volkswagen (datos de propietarios por modelo)fiches-auto.fr · Reliability study · consulted 26 September 2026 · in French
Fiabilité Audi (datos de propietarios por modelo)fiches-auto.fr · Reliability study · consulted 26 September 2026 · in French
Motores TFSI: características, ventajas e inconvenientesAutofácil · Motoring press · published 18 May 2020 · consulted 26 September 2026 · in Spanish
Motor 2.0 TFSI 190 CV (ficha técnica)km77 · Technical documentation · published 13 May 2015 · consulted 26 September 2026 · in Spanish
BMW N43Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW N46Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW N43: Bei diesem Benziner ist Ärger vorprogrammiertGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
BMW N46: Typische Probleme & HaltbarkeitGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
Audi TTWikipedia (inglés) · Other source · consulted 26 September 2026
BMW N43Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
BMW N46Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Tu coche quema aceite: 6 señales de alarma y la solución definitiva para salvar tu motorAutopista.es · Motoring press · published 19 June 2026 · consulted 26 September 2026 · in Spanish
Témoignages fiabilité Audifiches-auto.fr · Owners' forum · consulted 26 September 2026 · in French
Témoignages fiabilité Volkswagenfiches-auto.fr · Owners' forum · consulted 26 September 2026 · in French
BMW X1 E84 – Bekannte Probleme & SchwachstellenGebrauchtwagenberater · Motoring press · published 9 May 2023 · consulted 27 September 2026 · in German