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BMW N20

Field	Value
name	BMW N20 engine
image	BMW N20 Engine.JPG
production	2011-2018
configuration	Inline-4
head	Aluminium
block	Aluminium
displacement	1592 cc
1997 cc
bore	84.0 mm
stroke	71.8 mm
90.1 mm
valvetrain	DOHC, with VVT & VVL
turbocharger	Single twin-scroll
predecessor	BMW N52, BMW N53
successor	BMW B48
manufacturer	BMW
fueltype	Gasoline

1997 cc 90.1 mm

The BMW N20 is a 1.6 and turbocharged four-cylinder DOHC petrol engine with variable valve lift and variable valve timing which replaced the N53 (or BMW N52 in some markets) and was produced from 2011 to 2017 by BMW. Although the N20 is a four-cylinder engine, it is considered a replacement for the naturally aspirated six-cylinder N52/N53 because it powers equivalent models, producing similar horsepower to the N52/N53 with greater low-rpm torque and better efficiency.

The N20 features a twin-scroll turbocharger, double-VANOS (variable valve timing), Valvetronic (variable valve lift), direct injection, automatic stop-start and an electric water pump. The N20 was sold alongside the smaller displacement BMW N13 turbocharged four-cylinder engine. The N20 was placed in Wards Top 10 Engines in 2012.

In 2014, the N20 began to be replaced by its successor, the BMW B48.

Class action lawsuit alleging timing chain guide failures

It has been well documented in online forums, that thousands of early production N20 engines were manufactured with faulty internal plastic timing chain guides. Evidence indicates that defective polycarbonate compositions were utilized in the manufacturing process for the timing chain guide, and as a result over a very short period of time the rigid plastic guides would break down and deteriorate in the engine with little or no warning. Upon failure of these internal plastic components, the timing chain slackens (becomes loose) and "skips time" by jumping teeth on upper cam shaft sprocket, a phenomenon that causes catastrophic damage to the engine by changing the piston-to-valve synchronization and causing these parts to contact each other.

In 2017, a class action lawsuit was filed by several owners against BMW seeking redress for the faulty units. Plaintiffs in the BMW engine defect class action seek to represent a nationwide Class of consumers affected by timing chain guide and secondary chain failure and wear as well as several subclasses for states such as New Jersey, Illinois, Florida, Utah, New York, Colorado, Texas, Alabama, Oklahoma, Massachusetts, California, Wisconsin, Oregon and North Carolina. In 2018 BMW attempted to dismiss the class action lawsuit. In 2019 U.S. District Judge William H. Walls partially granted and partially denied BMW's motion to dismiss claims that it sold vehicles with a known engine defect. Walls also ruled that the automaker cannot escape the suit entirely.

Models

Engine	Displacement	Power
N20B16	1592 cc	125 kW
at 5,000 rpm	250 Nm
at 1,500-4,700 rpm	7,000	2013–2016
N20B20	1997 cc	115 kW
at 5,000 rpm	240 Nm
at 1,250-4,500 rpm	7,000	2013–2017
135 kW
at 5,000 rpm	270 Nm
at 1,250-4,500 rpm	7,000	2011–2017
160 kW
at 5,500 rpm	310 Nm
at 1,350-4,800 rpm	7,000	2012–2017
180 kW
at 5,000 rpm	350 Nm
at 1,250-4,800 rpm	7,000	2011–2017

N20B16

Applications:

125 kW version

2013–2016 F10 520i (Turkey and Tunisia only)

N20B20

Applications:

115 kW version

2013–2016 E89 Z4 sDrive18i
2013–2017 F25 X3 sDrive18i 135 kW version
2011–2015 E84 X1 xDrive/sDrive20i
2011–2017 F25 X3 xDrive20i
2012–2015 F30 320i
2013–2016 F34 320i GT
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
2012–2017 F20 125i
2013–2016 F10 525Li
2015–2017 Brilliance Huasong 7 MPV 180 kW version
2011–2016 E89 Z4 sDrive28i
2011–2015 E84 X1 xDrive/sDrive28i
2012–2017 F25 X3 xDrive28i
2011–2016 F30 328i
2014–2016 F32 428i
2012–2016 F10 528i
2013–2016 F34 328i GT
2014–2016 F22 228i
2014–2017 F26 X4 xDrive28i
2016–2018 F15 X5 xDrive40e

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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