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BMW Models and Engines
Confused by the BMW model range? Not sure what "E" number your BMW is? or what "M" number your engine is?
Hopefully this simple guide below will help answer your question. This guide is for reference use only. To be 100% sure what model you have, let us have either the last 7 of your chassis number, or your registration number.
E Numbers
| E number | Series | Models used in | Years |
| E12 | 5 | 530i | 1979-81 |
| E21 | 3 | 320i, 323i | 1977-83 |
| E23 | 7 | 733i, 735i | 1978-87 |
| E24 | 6 | 630CSi, 633CSi, 635CSi, M6 | 1978-89 |
| E28 | 5 | 518i, 520, 525e, 525i, 535i, M5 | 1981-87 |
| E30 | 3 | 316, 318i, 320i, 323i, 325e, 325i, M3 | 1983-91 |
| E31 | 8 | 840Ci, 850i, 850CSi | 1990-9 |
| E32 | 7 | 730i, 735i, 740i, 750i | 1988-94 |
| E34 | 5 | 518i, 520i, 525i, 525i, 530i, 535i, 540i, M5 | 1988-95 |
| E36 | 3 | 316i, 318i, 320i, 323i, 325i, 328i, M3 | 1991-99 |
| E38 | 7 | 728i, 730i, 735i, 740i, 750i | 1995-02 |
| E39 | 5 | 520i, 523i, 525i, 525tds, 530i, 535i, 540i, M5 | 1995-03 |
| E46 | 3 | 316i, 318i, 318d, 320i, 320d, 323i, 325i, 328i, 330i, M3 | 1998-04 |
| E53 | X5 | 3.0i, 3.0d, 4.4i, 4.6i, 4.8i | 2000- |
| E60 | 5 | 520i, 525i, 525td, 530i, 530td, 525td, 540i, 545i Saloon | 2003- |
| E61 | 5 | 525i, 525td, 530i, 525td, 535d, 545i Tourers | 2003- |
| E65 | 7 | 730i, 735i, 740i, 745i, 750i, 760i | 2002- |
| E90 | 3 | 318i, 318d, 320i, 320d, 325i, 325d, 330i, 330d, 335i Saloon | 2004- |
| E92 | 3 | 330d, 330i, 335i, 335d, M3 Coupe | 2006- |
Engines
| Type | Cyls | Engine Sizes | Examples | Valves |
| M10 | 4 | 1.6, 1.8, 2.0 | 2002, 318i, 320i | 8 |
| M20 | 6 | 2.0, 2.3, 2.5, 2.7 | 323i, 325i, 325e | 12 |
| M30 | 6 | 2.8, 3.0, 3.5 | 5,6 and 7 Series 1975-92 | 12 |
| M40 | 4 | 1.6, 1.8 | 316i, 318i | 4 |
| M41 | 4 | 1.8 | E36 318tds | 4 |
| M42 | 4 | 1.8 | 318i, 318iS, Ti | 16 |
| M44 | 4 | 1.9 | 318i, 318iS, Ti | 16 |
| M47 | 4 | 1.9 | 320d | 16 |
| M50 | 6 | 2.3, 2.5, 2.8 | 325i, 525i | 24 |
| M50TU | 6 | 2.3, 2.5, 2.8 | 325i, 525i | 24 Vanos |
| M51 | 6 | 2.5 | 325td, 525tds | 12 |
| M52 | 6 | 2.8 | 528i | 24 Vanos |
| M54 | 6 | 3.0 | X5, E46, Z3 | 24 Double Vanos |
| M57 | 6 | 3.0 | 530d | 24 |
| M60 | 8 | 3.0, 4.0 | 530i, 540i, 730i, 740i, 840Ci | 32 |
| M62 | 8 | 4.4 | 535i, 540i, 735 | 32 |
| M67 | 8 | 3.9 | 740d | 32 |
| M70 | 12 | 5.0 | 750i, 750il | 24 |
| M73 | 12 | 5.4 | 750i, 750il | 24 |
| M88 | 6 | 3.5 | M5, M6 | 24 |
| S14 | 4 | 2.3 | E30 M3 | 16 |
| S38 | 6 | 3.5 | M5 | 24 |
| S50 | 6 | 3.0 | E36 M3 | 24 Vanos |
| S52 | 6 | 3.2 | E36 M3 | 24 Vanos |
| S54 | 6 | 3.2 | E46 M3 | 24 Vanos |
| S62 | 8 | 5.0 | E39 M5 | 48 Vanos |
| S70 | 12 | 5.6 | 850CSi | 24 |