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BMW 4 Series Convertible (G23) 420i (184 Hp) Steptronic
Overall Rating
BMW 4 Series:
The BMW 4 Series is a range of compact executive cars manufactured by BMW since 2013. The 4 Series was created when BMW spun off the 2-door models of the 3 Series into a separate series. The 4 Series is currently in its second generation.
The original 4 Series concept car was unveiled in January 2013 at the North American International Auto Show in Detroit, Michigan. Both generations have been produced in the coupé, convertible and 5-door liftback body styles. The 4 series body style is very similar to that of the all electric BMW i4....(Read more on Wikipedia)
Convertible (G23) Overview:
BMW 4 Series (Convertible (G23)). With 300 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~7.25 l/100km). With a weight of 1690 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. Acceleration is good (0–100 km/h in 8.2 s). The top speed reaches 236 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
420i (184 Hp) Steptronic Verdict:
Performance Verdict
A smooth and refined entry-level petrol engine, offering sufficient power for relaxed driving but not for outright thrills.
Fuel Economy
Good fuel economy for a petrol convertible, especially in mixed driving conditions.
Pros and Cons:
Pros:
- • Stylish and distinctive design with a premium feel
- • Strong and efficient engine lineup, including potent mild-hybrid options
- • High-quality interior with advanced technology and infotainment
- • Engaging driving dynamics and responsive handling
- • Comfortable for a sports convertible, especially on longer journeys
Cons:
- • Premium pricing places it at the higher end of its segment
- • Rear seats are quite cramped, limiting practicality for adults
- • Ride can be firm on larger wheel options, impacting comfort on rough roads
- • Roof mechanism adds weight and complexity compared to a coupe
- • Some competitors offer a slightly softer, more comfort-focused ride
Specifications:
Specifications are compared to those of the previous generation(Coupe (F32, facelift 2017): 2017 - 2020).
| General: | |
|---|---|
| Brand: | BMW |
| Model: | 4 Series |
| Generation: | Convertible (G23) |
| Modification (Engine): | 420i (184 Hp) Steptronic |
| Start of production: | 2020 |
| End of production: | January, 2024 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Cabriolet |
| Seats: | 4 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Engine systems: | Start & Stop System |
| Power: | 184 Hp @ 5000-6500 rpm. Same horsepower |
| Power per litre: | 92.1 Hp/l [128mm more] |
| Torque: | 300 Nm @ 1350-4000 rpm. |
| Engine Model/Code: | B48B20A More details about the engine B48B20A |
| Engine displacement: | 1998 |
| Number of cylinders: | 4 |
| Engine configuration: | Inline |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Engine aspiration: | Twin-power turbo, Intercooler |
| Valvetrain: | VALVETRONIC |
| Engine oil capacity: | 5.25 l |
| Coolant: | 10 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 82 mm |
| Piston Stroke: | 94.6 mm |
| Compression ratio: | 11:1 |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - urban: | 7.1-7.4 l/100 km |
| Fuel consumption (economy) - extra urban: | 4.9-5.4 l/100 km |
| Combined fuel consumption (WLTP): | 6.7-7.4 l/100 km |
| Fuel consumption (economy) - combined (NEDC): | 5.7-6.1 l/100 km |
| Fuel consumption (economy) - urban (NEDC): | 7.1-7.4 l/100 km |
| Fuel consumption (economy) - extra urban (NEDC): | 4.9-5.4 l/100 km |
| Fuel consumption (economy) - combined: | 5.7-6.1 l/100 km |
| Emission standard: | Euro 6d |
| Acceleration 0 - 100 km/h: | 8.2 sec |
| Acceleration 0 - 62 mph: | 8.2 sec |
| Maximum speed: | 236 km/h |
| Weight-to-power ratio: | 9.2 kg/Hp, 108.9 Hp/tonne |
| Weight-to-torque ratio: | 5.6 kg/Nm, 177.5 Nm/tonne |
| Acceleration 0 - 60 mph: | 7.8 sec |
| Space: | |
|---|---|
| Kerb Weight: | 1690 |
| Max. weight: | 2185 |
| Max load: | 495 |
| Trunk (boot) space - maximum: | 385 l |
| Trunk (boot) space - minimum: | 300 l |
| Permitted trailer load with brakes (12%): | 1600 kg |
| Fuel tank capacity: | 59 l |
| Permitted trailer load without brakes: | 750 kg |
| Permitted towbar download: | 75 kg |
| Size: | |
|---|---|
| Length: | 4768 mm [128mm more] |
| Width: | 1852 mm [27mm more] |
| Height: | 1384 mm [8mm less] |
| Wheelbase: | 2851 mm [41mm more] |
| Width including mirrors: | 2081 mm |
| Front track: | 1575 mm |
| Rear (Back) track: | 1611 mm |
| Front overhang: | 858 mm |
| Rear overhang: | 1059 mm |
| Ride height (ground clearance): | 124 mm |
| Minimum turning circle (turning diameter): | 11.4 m [above average] |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 8 |
| Transmission type | Automatic |
| Gearbox type | Steptronic |
| Front brakes | Ventilated discs [Best for performance and cooling.] |
| Rear brakes | Ventilated discs [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 98Y XL |
| Wheel rims size | 7.5J x 17 |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
The hidden gems or the annoying flaws? Expose the truth about the BMW 4 Series!