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BMW automotive engine families listed as N46. Specifications below retain the source's separate family and variant labels.
Family specifications
BMW N46 engine
FieldReported valueProduction2004-2015ConfigurationInline-4Displacement1.8 L (1,796 cc) 2.0 L (1,995 cc)Cylinder bore84 mm (3.31 in)Piston stroke81 mm (3.19 in) 90 mm (3.54 in)Cylinder block materialAluminiumCylinder head materialAluminiumValvetrainDOHC , with VVT & VVLFuel typePetrolPredecessorBMW N42SuccessorBMW N43
Variant specifications
Versions
VersionDisplacementPowerTorqueYearN46B181,796 cc (109.6 cu in)85 kW (114 bhp) at 5,500 rpm175 N⋅m (129 lb⋅ft) at 3,750 rpm2004N46B20U11,995 cc (121.7 cu in)95 kW (127 bhp) at 5,750 rpm180 N⋅m (133 lb⋅ft) at 3,250 rpm2005N46B20U21,995 cc (121.7 cu in)100 kW (134 bhp) at 5,750 rpm180 N⋅m (133 lb⋅ft) at 3,250 rpm2007N46B20U01,995 cc (121.7 cu in)105 kW (141 bhp) at 6,000 rpm200 N⋅m (148 lb⋅ft) at 3,750 rpm2007N46B20O11,995 cc (121.7 cu in)110 kW (148 bhp) at 6,200 rpm200 N⋅m (148 lb⋅ft) at 3,600 rpm2004N46B20O11,995 cc (121.7 cu in)110 kW (148 bhp) at 6,200 rpm200 N⋅m (148 lb⋅ft) at 3,750 rpm2004N46NB201,995 cc (121.7 cu in)127 kW (170 bhp) at 6,400 rpm210 N⋅m (155 lb⋅ft) at 4,100 rpm2007
Recorded vehicle applications
N46B18
2004-2005 E46 316i/316ti
N46B20U0
The N46B20U0 produces 105 kW (141 bhp) and 200 N⋅m (148 lb⋅ft).
2007-2008 E90 318i
N46B20U1
2005-2007 E87 118i2005-2007 E90/E91 318i
N46B20U2
2007-2011 E81/E87 118i2007-2013 E90 318i
N46B20A
2004-2006 E46 318i, 318Ci and 318ti
N46B20O1
2005-2006 E46 318Ci2004-2007 E83 X3 2.0i2005-2008 E85 Z4 2.0i2004-2007 E87 120i2005-2007 E90/E91 320i
N46NB20
2007-2011 E81/E82/E87/E88 120i2007-2013 E90/E91/E92/E93 320i2007-2010 E60 520i2009-2015 E84 X1 sDrive18i / xDrive18i2007-2010 E83 X3 2.0i
BMW automotive engine directory
Design, development and variant notes
The N46 revised the N42's crankshaft, intake and valve gear. Its 2007 N46N update changed the intake, exhaust camshaft and engine-management system; Wikipedia identifies ME9.2 before that update and MV17.4.6 afterwards.
It continued in some markets alongside the direct-injection N43. The individual source article gives production through 2015, whereas Wikipedia's overview list gives a shorter date range.
Data adapted from the cited Wikipedia revision by Wikipedia contributors under CC BY-SA 4.0. Production dates and fitments reflect that revision; verify the exact engine code, market and vehicle before applying a specification.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
Wikipedia: List of BMW engines. Wikipedia contributors; CC BY-SA 4.0. Source revision oldid 1382309748; accessed 2026-11-10.Wikipedia: BMW N46. Wikipedia contributors; CC BY-SA 4.0. Source revision oldid 1378710218; accessed 2026-11-10.
Further Wikipedia-sourced details
The following additional information is drawn from the cited Wikipedia revision by Wikipedia contributors, available under CC BY-SA 4.0. An open-ended date reflects the source snapshot, not confirmed current production or fitment.
Additional technical and variant notes
The source lists the N46NB20 at 115 kW and 210 N⋅m, and describes its use in markets where high-sulphur fuel restricted the N43.
Further specifications from the cited articleAdditional facts are adapted from this Wikipedia revision by Wikipedia contributors, under CC BY-SA 4.0.The 2007 N46N update is described with intake and exhaust-camshaft changes and an engine-management change from Bosch ME9.2 to MV17.4.6. The cited N46 specification has a 6,500 rpm redline.Open each version to inspect formatting, tables and photographs.
Revision 4: BMW N46 engines
BMW automotive engine families listed as N46. Specifications below retain the source's separate family and variant labels.
Family specifications
BMW N46 engine
| Field | Reported value |
|---|
| Production | 2004-2015 |
| Configuration | Inline-4 |
| Displacement | 1.8 L (1,796 cc) 2.0 L (1,995 cc) |
| Cylinder bore | 84 mm (3.31 in) |
| Piston stroke | 81 mm (3.19 in) 90 mm (3.54 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC , with VVT & VVL |
| Fuel type | Petrol |
| Predecessor | BMW N42 |
| Successor | BMW N43 |
Variant specifications
Versions
| Version | Displacement | Power | Torque | Year |
|---|
| N46B18 | 1,796 cc (109.6 cu in) | 85 kW (114 bhp) at 5,500 rpm | 175 N⋅m (129 lb⋅ft) at 3,750 rpm | 2004 |
| N46B20U1 | 1,995 cc (121.7 cu in) | 95 kW (127 bhp) at 5,750 rpm | 180 N⋅m (133 lb⋅ft) at 3,250 rpm | 2005 |
| N46B20U2 | 1,995 cc (121.7 cu in) | 100 kW (134 bhp) at 5,750 rpm | 180 N⋅m (133 lb⋅ft) at 3,250 rpm | 2007 |
| N46B20U0 | 1,995 cc (121.7 cu in) | 105 kW (141 bhp) at 6,000 rpm | 200 N⋅m (148 lb⋅ft) at 3,750 rpm | 2007 |
| N46B20O1 | 1,995 cc (121.7 cu in) | 110 kW (148 bhp) at 6,200 rpm | 200 N⋅m (148 lb⋅ft) at 3,600 rpm | 2004 |
| N46B20O1 | 1,995 cc (121.7 cu in) | 110 kW (148 bhp) at 6,200 rpm | 200 N⋅m (148 lb⋅ft) at 3,750 rpm | 2004 |
| N46NB20 | 1,995 cc (121.7 cu in) | 127 kW (170 bhp) at 6,400 rpm | 210 N⋅m (155 lb⋅ft) at 4,100 rpm | 2007 |
Recorded vehicle applications
N46B18
N46B20U0
The N46B20U0 produces 105 kW (141 bhp) and 200 N⋅m (148 lb⋅ft).
N46B20U1
- 2005-2007 E87 118i
- 2005-2007 E90/E91 318i
N46B20U2
- 2007-2011 E81/E87 118i
- 2007-2013 E90 318i
N46B20A
- 2004-2006 E46 318i, 318Ci and 318ti
N46B20O1
- 2005-2006 E46 318Ci
- 2004-2007 E83 X3 2.0i
- 2005-2008 E85 Z4 2.0i
- 2004-2007 E87 120i
- 2005-2007 E90/E91 320i
N46NB20
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2013 E90/E91/E92/E93 320i
- 2007-2010 E60 520i
- 2009-2015 E84 X1 sDrive18i / xDrive18i
- 2007-2010 E83 X3 2.0i
BMW automotive engine directory
Design, development and variant notes
The N46 revised the N42's crankshaft, intake and valve gear. Its 2007 N46N update changed the intake, exhaust camshaft and engine-management system; Wikipedia identifies ME9.2 before that update and MV17.4.6 afterwards.
It continued in some markets alongside the direct-injection N43. The individual source article gives production through 2015, whereas Wikipedia's overview list gives a shorter date range.
Data adapted from the cited Wikipedia revision by Wikipedia contributors under CC BY-SA 4.0. Production dates and fitments reflect that revision; verify the exact engine code, market and vehicle before applying a specification.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
Further Wikipedia-sourced details
The following additional information is drawn from the cited Wikipedia revision by Wikipedia contributors, available under CC BY-SA 4.0. An open-ended date reflects the source snapshot, not confirmed current production or fitment.
Additional technical and variant notes
The source lists the N46NB20 at 115 kW and 210 N⋅m, and describes its use in markets where high-sulphur fuel restricted the N43.
Further specifications from the cited article
Additional facts are adapted from this Wikipedia revision by Wikipedia contributors, under CC BY-SA 4.0.
The 2007 N46N update is described with intake and exhaust-camshaft changes and an engine-management change from Bosch ME9.2 to MV17.4.6. The cited N46 specification has a 6,500 rpm redline.