The BMW M4 Convertible (G83) Competition 3.0, equipped with the 510 horsepower M xDrive M Steptronic transmission, represents the high-performance pinnacle of the G83 generation convertible lineup. Introduced in 2021 and continuing through January 2024, this variant combines open-air motoring with the potent engine and sophisticated drivetrain technology characteristic of the M4 Competition. It sits at the top of the convertible range, offering a significant performance upgrade over the base M4 Convertible and emphasizing all-weather capability through its xDrive all-wheel-drive system.
Technical Specifications
| Brand | BMW |
| Model | M4 |
| Generation | M4 Convertible (G83) |
| Type | Competition 3.0 (510 Hp) M xDrive M Steptronic |
| Start of production | 2021 |
| End of production | January, 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 10.2 l/100 km |
| Combined fuel consumption (US mpg) | 23.1 |
| Combined fuel consumption (UK mpg) | 27.7 |
| Combined fuel consumption (km/l) | 9.8 |
| CO2 emissions (WLTP) | 231-233 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.7 sec |
| Acceleration 0 – 62 mph | 3.7 sec |
| Acceleration 0 – 60 mph | 3.5 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 3.8 kg/Hp |
| Weight-to-torque ratio | 3 kg/Nm |
| Power | 510 Hp @ 6250 rpm |
| Power per litre | 170.4 Hp/l |
| Torque | 650 Nm @ 2750-5500 rpm (479.42 lb.-ft. @ 2750-5500 rpm) |
| Maximum engine speed | 7200 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | S58B30A |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 9.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | VALVETRONIC, Double-VANOS |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1920 kg (4232.88 lbs.) |
| Max. weight | 2345 kg (5169.84 lbs.) |
| Max load | 425 kg (936.96 lbs.) |
| Trunk (boot) space – minimum | 300 l (10.59 cu. ft.) |
| Trunk (boot) space – maximum | 385 l (13.6 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Length | 4794 mm (188.74 in.) |
| Width | 1887 mm (74.29 in.) |
| Height | 1395 mm (54.92 in.) |
| Wheelbase | 2857 mm (112.48 in.) |
| Front track | 1617 mm (63.66 in.) |
| Rear (Back) track | 1605 mm (63.19 in.) |
| Ride height (ground clearance) | 121 mm (4.76 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 12.6 m (41.34 ft.) |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission M Steptronic |
| Front suspension | Spring Strut |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | Front wheel tires: 275/35 R19 Rear wheel tires: 285/30 R20 |
| Wheel rims size | Front wheel rims: 9.5J x 19 Rear wheel rims: 10.5J x 20 |
INTRODUCTION
The G83 M4 Convertible Competition xDrive represents a significant evolution in BMW’s high-performance convertible offerings. Building upon the foundation of the G80 M3 and G82 M4 coupes, the G83 adds the allure of open-top driving without sacrificing the track-focused capabilities of the M brand. The Competition variant, distinguished by its increased power output and refined chassis tuning, is further enhanced by the M xDrive all-wheel-drive system, providing superior traction and stability in a variety of conditions. This model was produced from 2021 until January 2024, solidifying its place as a desirable performance convertible.
Powertrain & Engine Architecture
At the heart of the M4 Convertible Competition xDrive lies the S58B30A 3.0-liter inline-six engine. This engine is a masterpiece of modern engineering, featuring a closed-deck block for enhanced rigidity, forged crankshaft, and lightweight connecting rods. It utilizes direct fuel injection operating at a maximum pressure of 350 bar, ensuring precise fuel delivery and optimal combustion. The valvetrain employs BMW’s VALVETRONIC technology, allowing for fully variable valve lift and timing, maximizing efficiency and responsiveness. Twin-scroll turbochargers, positioned within the V of the engine, minimize turbo lag and deliver a broad torque curve. The engine produces 510 horsepower at 6,250 rpm and 650 Nm (479.42 lb-ft) of torque between 2,750 and 5,500 rpm.
The “M Steptronic” 8-speed automatic transmission is specifically tuned for performance, offering incredibly fast and precise shifts. It features Drivelogic, allowing the driver to select from different shift programs to tailor the transmission’s behavior to their driving style. The M xDrive system intelligently distributes power between the front and rear axles, prioritizing rear-wheel drive for a traditional M car feel but seamlessly engaging the front wheels when traction is needed. This results in exceptional grip and stability, particularly during acceleration and cornering.
Driving Characteristics
The M4 Convertible Competition xDrive delivers a thrilling driving experience. The combination of the powerful engine, quick-shifting transmission, and all-wheel-drive system results in blistering acceleration – 0 to 60 mph in approximately 3.5 seconds. The M xDrive system provides immense confidence, allowing drivers to exploit the engine’s power even in less-than-ideal conditions. While the all-wheel drive adds weight, the enhanced traction more than compensates, resulting in quicker lap times and more predictable handling. The steering is precise and communicative, providing ample feedback to the driver. The convertible top, a fully automatic fabric soft top, can be raised or lowered in approximately 18 seconds at speeds up to 31 mph.
Equipment & Trim Levels
The M4 Convertible Competition xDrive comes standard with a comprehensive list of features, including Merino leather upholstery, M Sport seats, a head-up display, a 12.3-inch digital instrument cluster, and a 10.25-inch central infotainment display. Standard driver-assistance systems include lane departure warning, forward collision warning, and automatic emergency braking. Optional extras included carbon fiber trim, upgraded sound systems (Harman Kardon or Bowers & Wilkins), ventilated and massaging seats, and a driving assistant professional package which adds adaptive cruise control and lane keeping assist. Interior color options were extensive, allowing for a high degree of personalization.
Chassis & Braking
The chassis of the M4 Convertible Competition xDrive is heavily reinforced compared to the standard 4 Series Convertible to handle the increased power and stresses of high-performance driving. The front suspension utilizes a spring-strut design with aluminum components to reduce weight, while the rear suspension features a multi-link setup. The car is equipped with M Compound brakes – ventilated discs at all four corners – providing exceptional stopping power. Larger, carbon-ceramic brakes were available as an option for even more demanding driving situations. The standard wheels are 19-inch alloys at the front and 20-inch alloys at the rear, wrapped in high-performance tires.
Market Reception & Comparison
The M4 Convertible Competition xDrive was generally well-received by automotive critics. Praise was directed towards its powerful engine, impressive acceleration, and all-weather capability. Some reviewers noted the added weight of the xDrive system and convertible mechanism, but most agreed that the benefits of increased traction and open-air driving outweighed the drawbacks. Compared to the rear-wheel-drive M4 Competition Convertible, the xDrive variant offered superior performance in inclement weather and quicker acceleration. Compared to other high-performance convertibles in its class, such as the Porsche 911 Cabriolet, the M4 offered a compelling combination of performance, luxury, and value.
Legacy
The S58 engine, found in the M4 Convertible Competition xDrive, has proven to be a robust and reliable powerplant. While convertible tops can sometimes present maintenance challenges, the G83’s fabric top has generally been durable. On the used car market, these models hold their value well, reflecting their desirability and performance credentials. The M4 Convertible Competition xDrive represents a significant achievement in BMW’s engineering prowess, offering a thrilling and engaging driving experience in a stylish and sophisticated package. It remains a sought-after vehicle for enthusiasts who demand both performance and open-air freedom.
