Options Engines My2006 523i – BMW 523i Engine Model Years Available: 2006 – 2007 Code N52B25 Type 2.5 Liter I6 Max Power 130 kW @ 5800 rpm175 hp @ 5800 rpm Max Torque 230 Nm @ 3500 rpm169 lb-ft @ 3500 rpm 0-60 mph (0-100 km/h) 8.5 sec Bore/Stroke 3.23/3.10 inch Compression Ratio 10.8:1 Fuel Grade Unleaded Premium Fuel Consumption 22 mpg City31 mpg Highway Torque Curve Back to the Engine Library