## Cars with N52 Engine
### Introduction
The BMW N52 is a naturally aspirated straight-six petrol engine that was produced from 2005 to 2015. It was the successor to the M54 engine and was used in a variety of BMW models, including the 1 Series, 3 Series, 5 Series, and X3.
The N52 engine was available in two displacement sizes: 2.5 liters and 3.0 liters. The 2.5-liter engine produced 170 kW (231 hp) and 250 Nm (184 lb-ft) of torque, while the 3.0-liter engine produced 190 kW (258 hp) and 300 Nm (221 lb-ft) of torque.
### Engine Design
The N52 engine is a compact and lightweight design, thanks to the use of aluminum for the cylinder block and head. It also features double overhead camshafts and variable valve timing on both the intake and exhaust sides.
The N52 engine is known for its smooth and responsive power delivery, as well as its impressive fuel economy. It is also relatively reliable, although some early models suffered from problems with the VANOS system.
### Models
The N52 engine was used in a variety of BMW models, including:
* 1 Series (E81, E82, E87, E88)
* 3 Series (E90, E91, E92, E93)
* 5 Series (E60, E61)
* X3 (E83)
### Performance
The N52 engine offers good performance, with the 2.5-liter engine providing 0-60 mph acceleration in 6.8 seconds and the 3.0-liter engine in 6.3 seconds. The top speed for both engines is 155 mph.
The N52 engine is also relatively fuel efficient, with the 2.5-liter engine returning 27 mpg in the city and 35 mpg on the highway. The 3.0-liter engine returns 25 mpg in the city and 32 mpg on the highway.
### Reliability
The N52 engine is generally reliable, although some early models suffered from problems with the VANOS system. The VANOS system is responsible for adjusting the timing of the intake and exhaust valves, and if it fails, it can cause the engine to run poorly or even stall.
BMW has since released a number of updates to the VANOS system, and the problem is no longer as common as it once was. However, it is still something to be aware of if you are considering buying a used BMW with an N52 engine.
### Conclusion
The BMW N52 engine is a good choice for those who are looking for a powerful and fuel-efficient engine. It is also relatively reliable, although some early models suffered from problems with the VANOS system.
If you are considering buying a used BMW with an N52 engine, be sure to have the VANOS system checked by a qualified mechanic.
