When BMW introduced the N20 engine in 2011, he marked a significant pivot point for the brand’s approach to the drive strand design. The N20 sucked from naturally sucked six-cylinder to a turbo-loaded four-cylinder and was to give BMW’s answer to stricter emission regulations and the growing demand for efficiency-without the brand. The N20 is used in a variety of models, from the 3 Series to Z4, a popular engine on the used market. But how good is it really?
This article immerses in the advantages and disadvantages of the BMW N20 engine, its reliability data record, tips for maintenance and even what you should know before you should set one.
What is the BMW N20 engine?
The BMW N20 is a 2.0-liter inline Four turbo engine with direct injection and variable ventriming (Vanos and Valvetronikum). It debuted in 2011 and replaced the naturally sucked inline-six-n52 and N53 engines in most non-M models. With outputs of 154 to 241 hp (and torque from 199 to 258 LB-FT), the N20 models such as F30 328i, F10 528i, X1, X3 and Z4 SDRIVE28I.
Although the N20 was a four-cylinder, it was constructed in such a way that it corresponded to the current and driving character of the previous six-cylinder engines corresponded to its TwinsCroll turbo, a high compression ratio (10.0: 1) and a strong torque with low low.
Advantages of the BMW N20 engine
1. strong performance for a four -cylinder
The N20 delivers an impressive torque in 1,250 rpm and gives it a bad character, which is particularly noticeable when driving the city. The 240 hp version in the F30 328i offers 0–60 MPH-times at the same time with older inline-six models.
2. Efficiency
Thanks to its small shift and forced induction, the N20 delivers solid fuel consumption. Many drivers report more than 34 MPG on the highway, especially in rear drive models.
3 .. light
Exchange the heavier inline-Six for a lighter four-cylinder improvement in weight distribution and the steering feeling, especially in smaller models such as F30 and F22.
4. Tuning potential
With an ECU melody alone, the N20 can make profits of 40 to 60 hp. Bolt-on Mods and E85 Support take it even further and make it a convincing platform for enthusiasts with a small budget.
Disadvantages of the BMW N20 engine
1. Timing chain problems
The Achilles’ heel of the early N20 engines is the timing chain assembly -especially the plastic chain guides. Before 2015 models are known to be prematurely torture of timing chains, which can lead to catastrophic failure. BMW spent a service bullet (but no recall) and many engines were replaced as part of the guarantee.
2. Oil leaks and consumption
Valve cover seals and oil filter housing density tend to run over time. In addition, some N20S oil consume, but not nearly as far as the older N62 -V8 or some N54 engines.
3. High pressure fuel pump (HPFP)
Although it is not as problematic as in the N54, it is known that the N20 HPFP has failed, especially with examples with a higher Milae.
4. Turbo longevity
The individual TwinsCroll turbo is not a frequent drop, but can increase the suffering of age from Wastegate rattling and increase problems with age, especially on coordinated engines or those with neglected oil changes.
N20 reliability: what you need to know
If maintained properly, the N20 can be a reliable engine-especially after 2015 models that have received revised timing chain components. However, the reliability varies depending on the maintenance of the car.
Recommended preventive measures:
- Replace the timing chain and lead around 80,000 to 100,000 miles (on early models).
- Change the oil every 5,000 to 7,000 miles, not the 10,000 mile interval recommended by BMW.
- Use only high-quality synthetic oil with the BMW LL-01 specification.
- Check the coolant system regularly for leaks or clogged hoses.
- Check the oil leaks on the valve cover, the oil pan and the filter housing.
Tuning of the BMW N20: a short guide
The N20 reacts well to the tuning and can become a sleeper with relatively small upgrades. Here is what many enthusiasts normally begin:
1. ECU melody
Level 1 melodies of respected companies (such as Bootmod3, MHD or Dinan) result in up to 290 hp and 330 LB-FT torque.
2. Upgrade of the rain pile
The installation of a fall with a high river or catless reduction is reduced and helps the turbo coil faster. It also improves the sound, but triggers a CEL without a melody.
3. Ladel air cooler & loading ear
By improving the charge air cooler, you can manage the thermal orbit, especially during spirited driving or in hot climate zones. It is also known that the plastic pipe cracks and should be replaced by an aluminum version.
4 .. Take & exhaust
Although less effective than tuning and turbo mods, a power consumption and a cat-back exhaust system can release some horsepower and improve sound.
5. Methanol injection or E85
Advanced tuners often operate E30 mixtures or meth kits for even more performance and knock protection -although this requires careful monitoring and support of mods.
Conclusion: is the N20 a good engine?
The BMW N20 is a solid engine that combines performance, efficiency and tuning potential in a small package. While early reliability problems – in particular the time chain – have affected their reputation, later revisions significantly improve their durability. For buyers who are looking for an affordable entry into the BMW ownership or a platform for setting, the N20 remains a strong candidate – as long as they do their homework and keep pace with maintenance.
Applications:
BMW N20B20 Motor (2.0 L Turbocher i4)
115 kW version (154 hp)
- 2013–2016 E89 Z4 SDRIVE18I
- 2013–2017 F25 X3 SDRIVE18I
135 kW version (181 hp)
- 2011–2015 E84 X1 XDRIVE20I / SDRIVE20II
- 2011–2017 F25 X3 XDrive20i
- 2012–2015 F30 320i
- 2013–2016 F34 320i Gran Turismo
- 2014–2016 F32 420i
- 2011–2016 F10 520i
- 2013–2016 F10 520LI
- 2011–2016 E89 Z4 SDRIVE20I
- 2014–2016 F22 220i
- 2015–2017 Brilliance Huasong 7 MPV
160 kW version (215 hp)
- 2012–2017 F20 125i
- 2013–2016 F10 525LI
- 2015–2017 Brilliance Huasong 7 MPV
180 kW version (241 hp)
- 2011–2016 E89 Z4 SDRIVE28I
- 2011–2015 E84 X1 XDRIVE28I / SDRIVE28I
- 2012–2017 F25 X3 XDrive28i
- 2011–2016 F30 328i
- 2014–2016 F32 428i
- 2012–2016 F10 528i
- 2013–2016 F34 328i Gran Turismo
- 2014–2016 F22 228i
- 2014–2017 F26 X4 XDRIVE28I
- 2016–2018 F15 X5 XDRIVE40E (plug-in hybrid)
Best N20 models to take into account:
Look for 2015 models with the B46 successor in the eye or for N20 engines with documented service motors, especially according to the detection of the timing chain replacement. In short, treat the N20 well and you can give you joy for years – of course turbo -charged.
