The BMW 4 Series Gran Coupe (F36), specifically the 418d variant with the Steptronic automatic transmission, was produced from 2017 to 2021 as part of the F36 lifecycle facelift. This model occupied the entry-level position within the 4 Series Gran Coupe range, offering a blend of practicality, efficiency, and the BMW driving experience. It was primarily marketed in Europe and other regions where diesel engines were favored, offering a compelling alternative to petrol-powered options and serving as a gateway into the 4 Series lineup for budget-conscious buyers. The 418d Gran Coupe aimed to provide a comfortable and refined experience, prioritizing fuel economy and lower running costs over outright performance.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36, facelift 2017) |
| Type (Engine) | 418d (150 Hp) Steptronic |
| Start of production | 2017 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 4.9-5.3 l/100 km (48 – 44.4 US mpg, 57.6 – 53.3 UK mpg, 20.4 – 18.9 km/l) |
| Fuel consumption (extra urban) | 3.6-3.9 l/100 km (65.3 – 60.3 US mpg, 78.5 – 72.4 UK mpg, 27.8 – 25.6 km/l) |
| Fuel consumption (combined) | 4.1-4.4 l/100 km (57.4 – 53.5 US mpg, 68.9 – 64.2 UK mpg, 24.4 – 22.7 km/l) |
| CO2 emissions | 107-116 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.9 sec |
| Acceleration 0 – 62 mph | 8.9 sec |
| Acceleration 0 – 60 mph | 8.5 sec |
| Maximum speed | 213 km/h (132.35 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 10.2 kg/Hp, 98 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 209.2 Nm/tonne |
| Power | 150 Hp @ 4000 rpm |
| Power per litre | 75.2 Hp/l |
| Torque | 320 Nm @ 1500-3000 rpm (236.02 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20A |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1530 kg (3373.07 lbs.) |
| Max. weight | 2090 kg (4607.66 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 1300 l (45.91 cu. ft.) |
| Fuel tank capacity | 57 l (15.06 US gal | 12.54 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4640 mm (182.68 in.) |
| Width | 1825 mm (71.85 in.) |
| Height | 1389 mm (54.69 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1557 mm (61.3 in.) |
| Rear (Back) track | 1604 mm (63.15 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 |
Powertrain & Engine Architecture
The 418d Gran Coupe utilized the BMW B47D20A 2.0-liter inline-four diesel engine. This engine is a member of the modular BMW engine family, known for its efficiency and refinement. The B47 featured a single turbocharger with variable geometry turbine (VGT) technology, an intercooler, and direct common-rail fuel injection operating at pressures up to 2,000 bar. The engine produced 150 horsepower at 4,000 rpm and 320 Nm (236 lb-ft) of torque between 1,500 and 3,000 rpm. This torque curve provided good low-end responsiveness, suitable for everyday driving. The engine also incorporated BMW’s TwinPower Turbo technology, enhancing both power and efficiency. The Steptronic 8-speed automatic transmission was standard, offering smooth and quick gear changes. This transmission was programmed for fuel efficiency and comfort, with the option for manual gear selection via steering wheel-mounted paddles.
Driving Characteristics
The 418d Gran Coupe with the Steptronic transmission delivered a comfortable and refined driving experience. While not a performance-oriented model, the engine provided adequate power for most driving situations. Acceleration from 0 to 60 mph took approximately 8.5 seconds, and the car had a top speed of 132.35 mph. The Steptronic transmission’s gear ratios were optimized for fuel economy, resulting in relaxed cruising at highway speeds. Compared to the more powerful 420d or 430d models, the 418d felt less urgent in its acceleration, but the difference was often negligible in everyday traffic. The automatic transmission, while smooth, could sometimes feel hesitant during quick downshifts. The rear-wheel-drive configuration contributed to balanced handling, although it wasn’t as sporty as the xDrive all-wheel-drive variants.
Equipment & Trim Levels
The 418d Gran Coupe typically came standard with features such as automatic climate control, a 6.5-inch infotainment system with iDrive controller, power-adjustable front seats, and a leather-wrapped steering wheel. Upholstery was typically cloth, but leather options were available. Common optional extras included a larger infotainment screen, navigation system, premium sound system, sunroof, and various driver-assistance features like parking sensors and lane departure warning. Trim levels varied by market, but generally, the 418d could be upgraded with Sport Line, Luxury Line, or M Sport packages, each adding unique styling elements and additional equipment.
Chassis & Braking
The F36 4 Series Gran Coupe featured a sophisticated chassis design. The front suspension utilized independent coil springs, while the rear employed an independent multi-link setup. This configuration provided a good balance between comfort and handling. The 418d Gran Coupe was equipped with ventilated disc brakes on all four wheels, providing adequate stopping power. ABS (Anti-lock Braking System) was standard, along with electronic stability control. The steering system was an electric power steering rack and pinion, offering precise and responsive steering feel.
Market Reception & Comparison
The 418d Gran Coupe was generally well-received by automotive critics as a practical and efficient option within the 4 Series range. It was praised for its fuel economy, comfortable ride, and refined interior. However, some reviewers noted that the engine lacked the outright performance of its more powerful siblings. Compared to the 420d, the 418d offered a lower price point but sacrificed some performance. The 418d’s fuel economy was a key selling point, consistently achieving combined figures of around 57.4 mpg. Reliability was generally good, with the B47 engine proving to be a robust and dependable unit.
Legacy
The BMW 418d Gran Coupe (F36) with the Steptronic transmission has established itself as a reliable and economical used car option. The B47 engine is known for its longevity, provided it has been properly maintained. Common maintenance items include regular oil changes, filter replacements, and occasional attention to the turbocharger and fuel injection system. The Steptronic transmission is also generally reliable, but fluid changes are recommended at the manufacturer’s specified intervals. Today, these cars represent a good value for buyers seeking a stylish and practical coupe with reasonable running costs. The 418d Gran Coupe remains a popular choice for those prioritizing fuel efficiency and comfort over outright performance.
