BMW 740d 2025 Review: Diesel Luxury, Mileage, Specs

The BMW 740d stands as a testament to the enduring appeal of diesel power in the premium sedan segment. Combining a potent 3.0-liter straight-six engine with mild-hybrid assistance, this flagship model delivers effortless performance, exceptional fuel economy, and unparalleled refinement. In an era dominated by electrification, the 740d proves that traditional diesel technology, enhanced by modern engineering, still holds significant advantages for long-distance cruising and executive comfort.

Engineered for Effortless Power

At the heart of the BMW 740d lies the B57 3.0-liter inline-six diesel engine, augmented by a 48-volt mild-hybrid system. This setup produces approximately 296 to 301 horsepower and a substantial 442 to 516 lb-ft of torque, available from as low as 1,500 rpm. The result is acceleration that feels deceptively quick for a vehicle of its size, with 0-62 mph times ranging from 5.2 to 6.3 seconds depending on configuration.

Unlike its predecessor, the G11 740d, which offered higher outputs around 335 hp, the newer G70 iteration prioritizes efficiency without sacrificing usability. Twin-turbocharging—one small for low-end response and a larger one for high-rev punch—ensures seamless power delivery. Paired with an 8-speed automatic transmission and standard xDrive all-wheel drive, the powertrain shifts smoothly, making overtakes on highways feel routine.

This table highlights the 740d’s balanced specs, positioning it ahead of milder siblings while maintaining diesel’s torque advantage over petrol alternatives.

Fuel Efficiency That Defies Expectations

One of the 740d’s standout features is its remarkable economy. BMW claims combined figures of 34.6 to 60.1 mpg (6.1-6.8 l/100km), with real-world highway driving often dipping under 6 l/100km. Urban tests yield around 29.8 mpg (7.9 l/100km), impressive for a 5-meter-plus luxury liner weighing over 2 tons.

• Highway Efficiency: ~38.5 mpg (6.1 l/100km) at steady speeds.
• Urban Reality: 29-43 mpg depending on conditions and driving style.
• CO2 Emissions: Around 181 g/km, competitive in its class.

The mild-hybrid system aids by recuperating energy during braking, boosting overall frugality. Owners report averages of 43 mpg in mixed UK driving, underscoring the engine’s ‘Efficient Dynamics’ ethos.

Interior Opulence and Technological Marvels

Step inside the 740d, and you’re enveloped in BMW’s signature luxury. The cabin boasts premium materials, with options for extended leather and wood trims. The standard wheelbase measures 126.6 inches, providing generous rear legroom—nearly six inches longer than the prior G11.

Infotainment is spearheaded by a 14.9-inch curved touchscreen running the latest iDrive OS, supporting wireless Apple CarPlay and Android Auto. Navigation is intuitive, with augmented reality overlays for directions. Rear passengers revel in the optional 31-inch 8K theater screen that deploys from the ceiling, perfect for streaming or gaming.

Seating excels with multi-contour fronts and Executive Lounge rears offering massage, heating, ventilation, and recline functions. Comfort seats, lauded as class-leading, ensure fatigue-free journeys.

Driving Dynamics: Comfort Meets Control

Despite its 5.5-meter length, the 740d handles with poise. Air suspension smooths imperfections, while xDrive enhances stability. The front end grips tenaciously, though the car’s mass is evident in corners.

Refinement is exemplary: diesel clatter is minimal at low revs, vanishing under load. Cabin insulation rivals the Mercedes S-Class, with wind and tire noise subdued.

• Supreme ride comfort on long hauls.
• Responsive steering for confident maneuvering.
• Optional M Sport tuning adds tautness without harshness.

Top speed is electronically limited to 155 mph, ample for most scenarios.

Safety and Assistance Features

BMW’s driver aids are comprehensive. Standard adaptive cruise control, lane-keeping, and emergency braking form the core, with Highway Assistant enabling hands-free Level 2 autonomy on compatible roads. Parking is effortless via 360-degree cameras and automated valet systems.

The Luxury Rear Seating package includes passenger-specific alerts, enhancing family or chauffeur use.

Ownership Considerations

Pricing starts around £60,000-£100,000 depending on spec, positioning it against the S-Class and A8. Maintenance benefits from BMW’s diesel reliability, with the B57 proven across models. Warranty covers 3 years/ unlimited mileage in some markets.

Resale holds strong due to the 7 Series badge, though diesel’s future hinges on emissions regulations.

Pros and Cons at a Glance

Who Should Buy the BMW 740d?

Ideal for executives prioritizing comfort, economy, and torque for motorway miles. Families or chauffeurs appreciate the rear space and tech. Enthusiasts may prefer petrol M760e, but diesel fans find unmatched value.

Frequently Asked Questions (FAQs)

Is the 2025 BMW 740d still available with diesel?

Yes, the 740d remains a key diesel option in select markets, emphasizing efficiency with mild-hybrid tech.

How does the 740d compare to the Mercedes S-Class diesel?

The 740d matches in refinement and beats on torque delivery, though the S-Class edges in outright opulence.

What is the real-world fuel economy of the 740d?

Expect 30-40 mpg mixed, up to 38 mpg highway—far better than petrol rivals.

Does the 740d have all-wheel drive?

Yes, xDrive is standard, enhancing traction and stability.

Is the interior tech overwhelming?

The iDrive system is intuitive, with physical controls for essentials.