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BMW 8 Series Convertible (G14) 840i (340 Hp) Steptronic
Overall Rating
BMW 8 Series:
The BMW 8 Series is a range of grand tourer coupes and convertibles produced by BMW.
The 8 Series was introduced in 1990 under the E31 model code and was only available as a two-door coupé. It is powered by a range of naturally aspirated V8 and V12 petrol engines. The E31 started production just as E24 6 Series production ended; however, it is not considered a direct successor. The E31 was discontinued in 1999 due to poor sales.
The model range was later reintroduced in 2018 with the second generation, G15 8 Series. It launched in coupé , convertible , and four-door Gran Coupé body styles, as the successor to the F06/F12/F13 6 Series lineup. The G15 8 Series introduces an inline-six diesel engine, and a high-performance BMW M8 trim later joined the lineup as well as the luxury inspired Alpina B8....(Read more on Wikipedia)
Convertible (G14) Overview:
BMW 8 Series (Convertible (G14)). With 500 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~9.15 l/100km). With a weight of 1830 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. Acceleration is excellent (0–100 km/h in 5.3 s). The top speed reaches 250 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
840i (340 Hp) Steptronic Verdict:
Performance Verdict
The petrol inline-six delivers a classic BMW sporty feel with strong, linear acceleration and a pleasing engine note, though RWD means less initial grip than xDrive.
Fuel Economy
Decent fuel economy for a powerful petrol engine, but noticeably higher than the diesel variants, especially in urban settings.
Pros and Cons:
Pros:
- • Stunning design and luxurious interior craftsmanship.
- • Powerful and refined engine options, from efficient diesels to a potent V8.
- • Excellent ride comfort for a grand tourer, even with large wheels.
- • Advanced technology and infotainment system.
- • All-wheel drive (xDrive) options provide superb traction and all-weather capability.
Cons:
- • High purchase price and running costs.
- • Rear seats are very cramped, suitable only for small children or short trips.
- • Trunk space is limited, especially with the roof down.
- • Steering can feel a bit numb compared to more focused sports cars.
- • Not directly tested by Euro NCAP, which might be a concern for some buyers.
Specifications:
Specifications are compared to those of the previous generation(Convertible (G14): 2020 - March, 2022).
| General: | |
|---|---|
| Brand: | BMW |
| Model: | 8 Series |
| Generation: | Convertible (G14) |
| Modification (Engine): | 840i (340 Hp) Steptronic |
| Start of production: | July, 2019 |
| End of production: | 2020 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Cabriolet |
| Seats: | 4 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Engine systems: | Start & Stop System |
| Power: | 340 Hp @ 5000-6500 rpm. |
| Power per litre: | 113.4 Hp/l |
| Torque: | 500 Nm @ 1600-4500 rpm. |
| Engine Model/Code: | B58B30C [Same engine] More details about the engine B58B30C |
| Engine displacement: | 2998 |
| Number of cylinders: | 6 |
| Engine configuration: | Inline |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Engine aspiration: | Twin-power turbo, Intercooler |
| Engine oil capacity: | 6.5 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: | 9.0-9.3 l/100 km |
| Fuel consumption (economy) - extra urban: | 6.3-6.4 l/100 km |
| Fuel consumption (economy) - combined (NEDC): | 7.3-7.5 l/100 km |
| Fuel consumption (economy) - urban (NEDC): | 9.0-9.3 l/100 km |
| Fuel consumption (economy) - extra urban (NEDC): | 6.3-6.4 l/100 km |
| Fuel consumption (economy) - combined: | 7.3-7.5 l/100 km |
| Emission standard: | Euro 6d - TEMP |
| Acceleration 0 - 100 km/h: | 5.3 sec |
| Acceleration 0 - 62 mph: | 5.3 sec |
| Maximum speed: | 250 km/h |
| Weight-to-power ratio: | 5.4 kg/Hp, 185.8 Hp/tonne |
| Weight-to-torque ratio: | 3.7 kg/Nm, 273.2 Nm/tonne |
| Acceleration 0 - 60 mph: | 5 sec |
| Space: | |
|---|---|
| Kerb Weight: | 1830 |
| Max. weight: | 2340 |
| Max load: | 510 |
| Trunk (boot) space - maximum: | 350 l |
| Trunk (boot) space - minimum: | 280 l |
| Fuel tank capacity: | 68 l |
| Size: | |
|---|---|
| Length: | 4843 mm [Same length.] |
| Width: | 1902 mm [Same width.] |
| Height: | 1339 mm [Same height.] |
| Wheelbase: | 2822 mm [Same wheelbase.] |
| Width including mirrors: | 2137 mm |
| Front track: | 1627 mm |
| Rear (Back) track: | 1642 mm |
| Ride height (ground clearance): | 118 mm |
| Minimum turning circle (turning diameter): | 11.6 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 | 245/45 R18 100Y XL; 275/40 R18 103Y XL |
| Wheel rims size | 8J x 18; 9J x 18 |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
The hidden gems or the annoying flaws? Expose the truth about the BMW 8 Series!