The E38 740d

The BMW E38 740d, introduced in 1999, was a groundbreaking model for BMW, as it was the first 7 Series to feature a V8 turbodiesel engine. This model represented BMW's commitment to combining luxury, performance, and fuel efficiency. Powered by the advanced M67D40 engine, the 740d offered significant power and torque while maintaining good fuel economy. The 740d stood out in the diesel luxury car segment mainly due to its powerful yet fuel efficient V8 engine.

Engine Overview

The BMW E38 740d was equipped with the M67D40 engine, a 4.0-liter V8 turbodiesel. This was a significant step up from the inline-six diesel engines previously used in the E38, marking BMW's first venture into V8 diesel technology. The M67 engine was designed to provide the substantial power delivery and refined performance expected of a luxury V8, but with the added fuel efficiency of a diesel. This engine was a marvel of engineering at the time, offering immense torque and power while remaining relatively fuel-efficient. Plus, you get to enjoy the unique V8 diesel purr.

Performance

The M67D40 engine delivered an impressive 245 horsepower (180 kW) at 4,000 rpm and an outstanding 560 Nm of torque (413 lb-ft) at 1,750-2,500 rpm. This significant increase in torque figure made the 740d incredibly capable at highway speeds, allowing for effortless overtaking and great acceleration even at lower RPMs. The V8 configuration provided consistent delivery of power, which is essential for maintaining the luxury feel of the 7 Series, as the dual turbocharging ensured that the performance remained consistent across the rev range.

  • Power Output: 245 hp (180 kW) @ 4,000 rpm
  • Torque: 560 Nm (413 lb-ft) @ 1,750-2,500 rpm
  • 0-100 km/h (0-62 mph): 8.4 seconds
  • Top Speed: 242 km/h (150 mph)

The 740d's combination of V8 power and diesel fuel efficiency meant it could comfortably handle high-speed cruising, while also providing more than necessary torque for swift and smooth acceleration. This made the 740d an ideal choice for those looking for luxury, performance, and long-distance capability in one package.

740d Sound


740d Acceleration

Fuel Consumption

One of the most appealing aspects of the BMW 740d was its balance between power and fuel efficiency. Despite being equipped with a powerful V8 engine, the 740d managed to offer impressive fuel economy for a car of its size and performance level. The M67's rather generous displacement and dual turbocharging, combined with BMW's advanced diesel tehnology, contributed to a relatively low fuel consumption, especially on long highway journeys.

  • Fuel Consumption (combined): 9-10 liters per 100 kilometers (around 28-31 mpg)
  • Fuel Tank Capacity: 85 liters (22.5 gallons)

Given its size, weight, and performance, the fuel economy figures were remarkable, especially considering the substantial power and torque output of the engine. The 740d became a popular choice for those who required both power and efficiency in a luxury sedan.

Also, taking into consideration that production only began in 1999, this is a quite rare E38. Only around 3450 units were ever made. This also means that if maintenance or repair is needed, parts can be quite hard to find. Being a rather complex V8 biturbo diesel, few mechanics know how to properly fix these engines, so be sure you get qualified help when dealing with such repairs.

Reliability and Maintenance

The M67 engine in the BMW 740d was designed for durability and long-term reliability, but as with any high-performance diesel engine, regular maintenance was key to ensuring its longevity. Common maintenance tasks included:

  • Turbocharger care: As with all turbocharged engines, these tend to fail overtime and finding compatible replacements is a bit of a hassle.
  • Fuel system maintenance: Regular replacement of fuel filters is key to clogging prevention in the high-pressure common-rail injection system.

While the M67 engine was generally reliable, potential issues could arise with the turbochargers or the common-rail fuel injection system over time, especially if the vehicle wasn't properly maintained.


Cool factor

Out of the 3 diesel powertrains available on the E38 chassis, we believe that the M67D40 stands out the most, considering its performance, sound and uniqueness of a V8 biturbo diesel in a luxury sedan.

The 740d E38 is also one of the rarest E38 variants, given that around 3450 units were ever produced (worldwide).