The BMW N52 engine is a six-cylinder engine that was produced between 2004 and 2015. It was used in a number of BMW models, including the 1 Series, 3 Series, 5 Series, X3, X5, and Z4. The engine was designed to be more fuel-efficient than its predecessor, the M54 engine, while still providing excellent performance.
Specs of BMW N52 Engine
Modification: N52B25
| Displacement | 2497 cc |
| Power system | Injector |
| Engine power | 177 – 218 hp |
| Torque | 230 – 250 Nm |
| Cylinder block | Aluminum R6 |
| Cylinder head | Aluminum 24v |
| Cylinder diameter | 82 mm |
| Stroke | 78.8 mm |
| Compression ratio | 11 |
| Engine features | Valvetronic, DISA |
| Hydraulic compensators | Yes |
| Timing Chain/Belt | Chain |
| Variable Valve Timing (VVT) | double VANOS |
| Turbocharger | No |
| Oil capacity/Recommended oil | 6.5 l 5W-30 |
| Fuel type | Medium/Plus |
| Euro class | EURO 4/5 |
| Average lifespan | 250 000 km |
Modification: N52B30
| Displacement | 2996 cc |
| Power system | Injector |
| Engine power | 218 – 272 hp |
| Torque | 270 – 315 Nm |
| Cylinder block | Aluminum R6 |
| Cylinder head | Aluminum 24v |
| Cylinder diameter | 85 mm |
| Stroke | 88 mm |
| Compression ratio | 10.7 |
| Engine features | Valvetronic, DISA |
| Hydraulic compensators | Yes |
| Timing Chain/Belt | Timing Chain |
| Variable Valve Timing (VVT) | double VANOS |
| Turbocharger | No |
| Oil capacity/Recommended oil | 6.5 l 5W-30 |
| Fuel type | Medium/Plus |
| Euro class | EURO 4/5 |
| Average lifespan | 275 000 km |
Performance of BMW N52 Engine
The BMW N52 engine is known for its impressive performance, especially in terms of acceleration and top speed. It’s also highly regarded for its smooth power delivery and responsive handling. Here are some of the performance stats of the BMW N52 engine:
- 0-60 mph acceleration: 5.5-6.5 seconds
- Top speed: 130-155 mph
- Fuel efficiency: 18-22 mpg in the city, 25-28 mpg on the highway
What cars use the N52 2.5 – 3.0 l
| 1-Series E87 | 2006 – 2011 |
| 3-Series E90 | 2005 – 2011 |
| 5-Series E60 | 2005 – 2010 |
| 5-Series F10 | 2010 – 2011 |
| 6-Series E63 | 2004 – 2010 |
| 7-Series E65 | 2005 – 2008 |
| X1-Series E84 | 2009 – 2011 |
| X3-Series E83 | 2006 – 2010 |
| X3-Series F25 | 2010 – 2011 |
| X5-Series E70 | 2006 – 2010 |
| Z4-Series E85 | 2005 – 2008 |
| Z4-Series E89 | 2008 – 2011 |
Maintenance Tips for BMW N52 Engine
Proper maintenance is crucial for ensuring the longevity and optimal performance of the BMW N52 engine. Here are some essential maintenance tips to keep in mind:
| Maintenance Task | Recommended Interval | Notes |
|---|---|---|
| Engine Oil Change | Every 7,500 – 10,000 miles | Use BMW LL-01 or LL-04 approved oils. |
| Oil Filter Replacement | Every 7,500 – 10,000 miles | Always replace the oil filter when changing the engine oil. |
| Spark Plug Replacement | Every 60,000 miles | Use OEM or equivalent spark plugs. |
| Air Filter Replacement | Every 30,000 miles | Use OEM or high-quality aftermarket air filters. |
| Fuel Filter Replacement | Every 60,000 miles | Use OEM or high-quality aftermarket fuel filters. |
| Cooling System Flush | Every 100,000 miles | Use BMW approved coolant and distilled water. |
| Transmission Fluid and Filter Replacement | Every 100,000 miles | Use BMW approved transmission fluid and filters. |
| Valve Cover Gasket Replacement | As needed | Look for signs of oil leaks around the valve cover. |
| Vanos Solenoid Replacement | As needed | Look for rough idle, misfires or hesitation. |
| Water Pump and Thermostat Replacement | Every 80,000 – 100,000 miles | Use OEM or high-quality aftermarket parts. |
| Timing Chain and Tensioner Replacement | Every 100,000 – 120,000 miles | This is a major job and should be done by a professional mechanic. |
These are general guidelines and may vary depending on driving conditions and individual vehicle needs. Always consult your owner’s manual and a qualified mechanic for specific recommendations.
Common Problems of the BMW N52 Engine
VANOS System Failure
One of the most common issues with the N52 engine is the failure of the VANOS system. The VANOS system is responsible for adjusting the intake and exhaust camshafts to optimize engine performance. If the VANOS system fails, it can result in poor engine performance, reduced fuel efficiency, and even engine stalling. Some of the signs of a failing VANOS system include rough idling, loss of power, and strange engine noises.
Oil Leaks
Another common problem with the N52 engine is oil leaks. Oil leaks can occur due to a variety of reasons, including a damaged valve cover gasket, a faulty oil filter housing gasket, or a damaged oil pan gasket. If left unchecked, oil leaks can cause severe engine damage and even lead to engine failure.
High-Pressure Fuel Pump (HPFP) Failure
The N52 engine is equipped with a high-pressure fuel pump (HPFP), which is responsible for supplying fuel to the engine at high pressures. Unfortunately, the HPFP on the N52 engine is prone to failure, which can result in engine stalling, rough idling, and reduced engine performance.
Timing Chain Issues
Timing chain issues are another common problem with the N52 engine. The timing chain is responsible for synchronizing the movement of the engine’s valves and pistons. If the timing chain fails, it can cause severe engine damage, including bent valves and damaged pistons.
Coolant Leaks
Coolant leaks are another issue that is common with the N52 engine. Coolant leaks can occur due to a variety of reasons, including a damaged water pump, a faulty thermostat, or a damaged radiator. If left unchecked, coolant leaks can cause severe engine damage and even lead to engine failure.
Reliability
Despite these issues, the N52 engine is generally considered to be a reliable engine if it is properly maintained and cared for. Regular oil changes, inspections, and addressing any issues promptly can help to extend the life of the engine and prevent major problems from developing.
Price
Factors that Affect the Price of a New or Used BMW N52 Engine
There are several factors that can affect the price of a new or used N52 engine. These include:
- New vs. Used: A new N52 engine will generally cost more than a used engine. However, a used engine may require more maintenance and repairs in the long run.
- Mileage: The mileage on a used N52 engine can greatly affect its price. Engines with lower mileage will generally be more expensive than those with higher mileage.
- Condition: The overall condition of a used N52 engine can also impact its price. Engines that have been well-maintained and are in good condition will be more expensive than those that have been neglected.
- Location: The price of a new or used N52 engine can vary depending on your location. Engines in high-demand areas may be more expensive than those in areas with less demand.
Price of a New BMW N52 Engine
If you are in the market for a new N52 engine, you can expect to pay between $5,000 and $7,000, depending on the specific model and year. This price includes the engine itself, as well as installation and any necessary parts and labor.
Price of a Used BMW N52 Engine
The price of a used N52 engine can vary greatly depending on the factors mentioned above. On average, you can expect to pay between $1,500 and $3,500 for a used N52 engine. However, engines with low mileage and in good condition can cost significantly more.
Tips for Buying an engine
If you are considering purchasing a used N52 engine, there are a few things you should keep in mind to ensure you get a good deal:
- Check the mileage: The mileage on the engine can greatly affect its price and overall condition. Try to find an engine with lower mileage to ensure it will last longer.
- Inspect the engine: Before purchasing a used N52 engine, it’s important to inspect it thoroughly. Look for signs of wear and tear, such as oil leaks or corrosion.
- Ask for maintenance records: If possible, ask the seller for maintenance records to ensure the engine has been well-maintained.
- Get a warranty: If you can, try to purchase a used N52 engine that comes with a warranty. This will give you added peace of mind in case something goes wrong.
- Compare prices: Don’t just settle for the first N52 engine you find. Compare prices from different sellers to ensure you are getting a good deal.
FAQs
How do I know if my BMW has an N52 engine?
You can determine if your BMW has an N52 engine by looking at the engine code. The N52 engine code is typically found on the engine cover or the VIN sticker.
How often should I change the oil in my BMW N52 engine?
It’s recommended to change the oil in your BMW N52 engine every 7,500 to 10,000 miles, depending on your driving habits and conditions.
Can I use aftermarket parts on my BMW N52 engine?
While aftermarket parts may be cheaper, it’s recommended to use OEM (original equipment manufacturer) parts designed for your specific BMW model to ensure proper fit and performance.
1 Comment
P. · 20/04/2024 at 22:17
1. VANOS non-return valves cleaning recommended interval? (also quite common cause for rough idle and poor fuel consumption, when dirty or even stuck entirely)
2. Serpentine belt replacement recommended interval?
3. Some experts recommend using LL-01 5W40 oil instead of 5W30. Especially on older N52 engines, like over 100k miles. Any truth to that?