2017-2020 BMW 5 Series Touring (G31) 540d (320 Hp) xDrive Steptronic

The BMW 5 Series Touring (G31) 540d xDrive Steptronic, produced from 2017 to 2020, represents a compelling blend of performance, practicality, and luxury within the fifth generation (G31) of BMW’s iconic 5 Series wagon. Positioned as a premium offering within the lineup, the 540d catered to buyers seeking a powerful and efficient diesel engine coupled with the convenience of an eight-speed automatic transmission and BMW’s xDrive all-wheel-drive system. It served as a flagship variant for those prioritizing torque and long-distance comfort over the more sporting characteristics of gasoline-powered models.

Technical Specifications

Powertrain & Engine Architecture

The heart of the 540d is BMW’s B57D30B 3.0-liter inline-six diesel engine. This engine is a member of the modular BMW engine family, known for its robust construction and sophisticated technology. The B57 utilizes a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A twin-scroll turbocharger, coupled with intercooling, provides a broad torque curve and minimizes turbo lag. The engine also features variable valve timing (VANOS) and variable turbine geometry (VTG) on the turbocharger to further enhance efficiency and responsiveness. The engine produces 320 horsepower at 4,400 rpm and a substantial 680 Nm (501.54 lb-ft) of torque between 1,750 and 2,250 rpm. This torque output is a key characteristic of the 540d, providing effortless acceleration and strong pulling power. The engine is paired with BMW’s eight-speed Steptronic automatic transmission, known for its smooth shifts and quick response. This transmission is programmed for both comfort and performance, adapting to driving style and conditions.

Driving Characteristics

The 540d xDrive Steptronic delivers a refined and confident driving experience. The abundant torque allows for brisk acceleration in virtually any gear, making overtaking effortless. The xDrive all-wheel-drive system provides excellent traction, particularly in adverse weather conditions. While not as overtly sporty as some of the gasoline-powered 5 Series variants, the 540d offers a composed and stable ride. The automatic transmission contributes to a relaxed driving experience, seamlessly shifting gears to maintain optimal engine speed. Compared to the 530d, the 540d offers a noticeable performance upgrade, while the 550i gasoline model provides more outright power but sacrifices the fuel efficiency and low-end torque of the diesel. The gear ratios are tuned for a balance between acceleration and fuel economy, with a relatively tall final drive to maximize efficiency on the highway.

Equipment & Trim Levels

The 540d xDrive Steptronic typically came well-equipped as a higher-end trim. Standard features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a navigation system, and a suite of driver-assistance technologies such as lane departure warning and automatic emergency braking. Optional extras included features like adaptive cruise control, a head-up display, ventilated front seats, and a panoramic sunroof. Interior trim options ranged from elegant wood veneers to modern aluminum accents. The standard dashboard configuration featured a 10.25-inch touchscreen display integrated into the center console, controlled via BMW’s iDrive infotainment system.

Chassis & Braking

The G31 5 Series Touring features a sophisticated chassis design. The front suspension utilizes a double-wishbone setup, while the rear employs an independent multi-link suspension. This configuration provides a comfortable ride and precise handling. The 540d typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is enhanced by ABS (Anti-lock Braking System), electronic brake-force distribution (EBD), and brake assist. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning is geared towards comfort and stability, prioritizing a smooth ride over aggressive handling.

Market Reception & Comparison

The 540d xDrive Steptronic was generally well-received by automotive critics. It was praised for its powerful and efficient engine, comfortable ride, and spacious interior. Critics noted the excellent fuel economy for a vehicle of its size and performance. Compared to other trims in the 5 Series lineup, the 540d offered a compelling combination of performance and efficiency, appealing to buyers who frequently undertake long journeys. While the initial purchase price was higher than that of the 530d, the 540d’s superior performance and refinement justified the cost for many buyers. Reliability reports generally indicate good long-term reliability, although diesel particulate filter (DPF) issues can occur with vehicles primarily used for short trips.

Legacy

The B57 engine powering the 540d has proven to be a durable and reliable powerplant. The 540d xDrive Steptronic remains a desirable used car option, offering a blend of luxury, performance, and practicality. The eight-speed Steptronic transmission has also proven to be robust and reliable. However, potential buyers should be aware of the potential for DPF issues and the cost of maintaining a complex diesel engine. The G31 5 Series Touring, and particularly the 540d variant, represents a high point in BMW’s wagon design and engineering, offering a compelling alternative to traditional SUVs.