| 26 version of the engine | 123456 | | Typ | 520i | 523i | 523i | 525i | 525i |
| Engine | benzynowy | benzynowy | benzynowy | benzynowy | benzynowy |
| Type of injection | bezpośredni | pośredni MPI | bezpośredni | pośredni MPI | pośredni MPI |
| Engine Code | N43B20 | N52B25 | N53B25 | M54B25 | N52B25 |
| Years of mounting | 2007-2010 | 2006-2007 | 2007-2010 | 2004-2005 | 2006-2007 |
| Cylinders/valves | R4/16 | R6/24 | R6/24 | R6/24 | R6/24 |
| Displacement [cm³] | 1995 | 2497 | 2497 | 2494 | 2497 |
| Power [kW/PS/RPM] | 125/170/6700 | 130/177/5800 | 140/190/6100 | 141/192/6000 | 160/218/6500 |
| Torque [Nm/RPM] | 210/4250 | 230/3500-5000 | 240/3500-5000 | 245/3500 | 250/2750-4250 |
| Timing gear | łańcuch | łańcuch | łańcuch | łańcuch | łańcuch |
| Particle filter | - | - | - | - | - |
| Gearbox | manual. 6b/aut. 6b | manual. 6b/aut. 6b | manual. 6b/aut. 6b | manual. 6b/aut. 6b | manual. 6b/aut. 6b |
| Drivetrain | tylny | tylny | tylny | tylny | tylny |
| Brakes, front/rear | tarcz. went./tarcz. | tarcz. went./t. went. | tarcz. went./t. went. | tarcz. went./t. went. | tarcz. went./t. went. |
| Front suspension | wielowahaczowe | wielowahaczowe | wielowahaczowe | wielowahaczowe | wielowahaczowe |
| Rear suspension | wielowahaczowe | wielowahaczowe | wielowahaczowe | wielowahaczowe | wielowahaczowe |
| Curb weight [kg] | 1560/1590 | 1560/1580 | 1590/1620 | 1580/1590 | 1565/1585 |
| Body dimensions [mm] | 4843/1846/1491 | 4843/1846/1491 | 4843/1846/1491 | 4843/1846/1491 | 4843/1846/1491 |
| Luggage capacity [l] | 500/1650 | 500/1650 | 500/1650 | 500/1650 | 500/1650 |
| Acceleration 0-100km/h (0-62mph) [s] | 9,0/10,0 | 8,8/9,5 | 8,5/9,1 | 8,2/8,8 | 7,8/8,3 |
| Top speed [km/h] | 220/219 | 227/224 | 230/229 | 232/229 | 240/237 |
| Fuel cons. (city/h-way/comb.) [l/100km] | 9,5/5,5/7,0 | 13,7/7,1/9,5 | 10,6/6,0/7,7 | 14,7/7,9/10,3 | 13,5/7,2/9,5 |
| Fuel tank capacity [l] | 70 | 70 | 70 | 70 | 70 |
| Ratio kg/PS | 9.18/9.35 | 8.81/8.93 | 8.37/8.53 | 8.23/8.28 | 7.18/7.27 |