The E39 530i

Engine

The BMW E39 530i was powered by the M54B30, a 3.0-liter inline-six (I6) that delivered strong performance, smooth power delivery, and impressive refinement. As the most powerful naturally aspirated six-cylinder engine in the E39 lineup, it struck the perfect balance between performance, reliability, and efficiency.

Introduced with the 2000 facelift, the M54B30 replaced the older M52TU-based 528i, bringing electronic throttle control, a revised intake manifold, and an improved cooling system. These enhancements resulted in better low-end torque, smoother acceleration, and a more responsive throttle.

Thanks to its bulletproof design and strong aftermarket support, the 530i remains a favorite among BMW enthusiasts, often considered one of the best all-around engines BMW ever made.


Performance

The M54B30 delivered 231 hp (170 kW) at 5,900 rpm and 300 Nm (221 lb-ft) at 3,500 rpm, making it significantly more powerful than the 523i and 528i, while maintaining a naturally aspirated linear power delivery.

Its torque-rich midrange made for effortless acceleration, whether cruising on the highway or pushing through twisty roads. The 530i was one of the quickest non-M models in the E39 lineup, offering performance close to the V8-powered 540i but with lower running costs.

Specs:

  • Power Output: 231 hp (170 kW) @ 5,900 rpm
  • Torque: 300 Nm (221 lb-ft) @ 3,500 rpm
  • 0-100 km/h (0-62 mph) Acceleration: ~6.9 seconds (manual)
  • Top Speed: ~250 km/h (155 mph) (electronically limited)


The 530i was highly regarded for its balance of power and daily usability, making it one of the most desirable non-M E39 models.

530i Sound


530i Acceleration

Fuel Efficiency

  • Combined: ~9.0–10.0 liters per 100 km (23–26 mpg)
  • Urban: ~12.0–13.0 liters per 100 km (18–20 mpg)
  • Extra-Urban: ~7.0–8.0 liters per 100 km (29–33 mpg)
  • Fuel Tank Capacity: 70 liters (18.5 gallons)

Reliability

The M54B30 engine is well-known for its durability and smooth operation, but it does come with a few common maintenance concerns.

Key reliability factors include:

  • Strong bottom end – Known to last well beyond 400,000 km (250,000 miles) with proper maintenance.
  • Cooling system weak points – Expansion tanks, water pumps, and radiators should be replaced preventively.
  • Oil consumption – Common at higher mileage, often due to worn piston rings or valve stem seals.
  • DISA valve failures – Can lead to rough idle or power loss if not addressed.

When properly maintained, the M54B30 is considered one of BMW's most reliable and well-balanced inline-six engines ever made.