2018-2020 BMW 6 Series Gran Turismo (G32) 620d (190 Hp) Steptronic

The BMW 6 Series Gran Turismo (G32) 620d Steptronic, produced from 2018 to 2020, represents BMW’s attempt to blend the luxury and performance of the 6 Series with the practicality of a Gran Turismo body style. Positioned as an entry-level diesel offering within the G32 range, it aimed to provide a balance of efficiency, comfort, and BMW driving dynamics. The 620d utilized BMW’s modular UKL2 platform, shared with other models like the 3 Series Gran Turismo, and was primarily marketed in Europe and other regions where diesel engines remained popular. It served as a more accessible alternative to the higher-performance 630d and 640d variants, targeting buyers prioritizing fuel economy and relaxed long-distance cruising.

Technical Specifications

Powertrain & Engine Architecture

The 620d Gran Turismo was powered by BMW’s B47D20B, a 2.0-liter inline-four diesel engine. This engine is part of BMW’s modular engine family and features a single twin-scroll turbocharger, direct common-rail fuel injection, and variable valve timing (VANOS) on the intake side. The B47 engine is known for its relatively quiet operation and good fuel efficiency. The engine produced 190 horsepower at 4,000 rpm and 400 Nm (295 lb-ft) of torque between 1,750 and 2,500 rpm. This torque output, available at relatively low engine speeds, contributed to the car’s relaxed cruising ability. The engine also incorporated a diesel particulate filter (DPF) to meet stringent Euro 6 emissions standards. The “Steptronic” transmission refers to BMW’s 8-speed automatic gearbox, known for its smooth shifts and responsiveness. This transmission was specifically tuned to complement the engine’s torque curve, prioritizing fuel economy and comfortable gear changes over outright performance.

Driving Characteristics

The 620d Steptronic offered a comfortable and refined driving experience, prioritizing ease of use over sporty handling. The 7.9-second 0-60 mph acceleration was adequate for everyday driving, but noticeably slower than the more powerful 630d and 640d models. The 8-speed automatic transmission, while smooth, could sometimes feel hesitant during quick overtaking maneuvers, requiring a downshift to access the engine’s full torque. The gear ratios were optimized for fuel efficiency, resulting in a relatively low engine speed at highway cruising speeds. The rear-wheel-drive configuration provided a balanced feel, but lacked the all-wheel-drive stability of some competitors. The suspension, tuned for comfort, absorbed bumps and imperfections in the road well, making it a suitable vehicle for long journeys.

Equipment & Trim Levels

The 620d Gran Turismo typically came standard with a generous amount of equipment, reflecting its positioning as a premium vehicle. Standard features included leather upholstery, automatic climate control, a BMW iDrive infotainment system with a 10.25-inch touchscreen display, and a suite of driver-assistance systems such as lane departure warning and collision warning. Optional extras included a panoramic sunroof, upgraded audio systems (Harman Kardon), adaptive cruise control, and parking assist. Interior trim options varied, with choices in wood veneers and aluminum accents. The dashboard layout was modern and driver-focused, with a clear and intuitive interface.

Chassis & Braking

The G32 620d Gran Turismo utilized a double-wishbone front suspension and an independent multi-link rear suspension. This setup provided a good balance of ride comfort and handling. The car was equipped with ventilated disc brakes on all four wheels, providing adequate stopping power for its weight class. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard safety features. The steering was electrically assisted, offering a light and precise feel. The 620d’s curb weight of 1765 kg (3891.16 lbs) was relatively high, which contributed to its less agile handling compared to lighter sports sedans.

Market Reception & Comparison

The 620d Gran Turismo received mixed reviews from automotive critics. While praised for its comfortable ride, spacious interior, and fuel efficiency, it was often criticized for its relatively modest performance and higher price compared to more conventional estate cars. Compared to the 630d and 640d variants, the 620d offered significantly less power and acceleration, but at a lower purchase price and with improved fuel economy. The 620d’s fuel economy figures of 4.8-4.9 l/100 km (49-48 US mpg) were competitive within its segment, making it an attractive option for drivers prioritizing efficiency. However, some reviewers noted that the engine could feel strained when fully loaded or driving uphill.

Legacy

The B47 engine, used in the 620d, has proven to be a relatively reliable powertrain, although some early models experienced issues with the timing chain. Regular maintenance, including oil changes and DPF regeneration, is crucial for long-term reliability. On the used car market, the 620d Gran Turismo represents a more affordable entry point into the 6 Series range. Its combination of comfort, space, and fuel efficiency continues to appeal to buyers seeking a practical and refined grand tourer. However, potential buyers should be aware of the potential for DPF issues and the importance of a thorough pre-purchase inspection.