The Mercedes-Benz E-Class Cabriolet (A238) E 450 V6, produced from 2018 to 2020, represents a sophisticated blend of luxury, performance, and open-air driving enjoyment. Positioned as a mid-to-high-range offering within the A238 generation E-Class Cabriolet lineup, it served as a step up from the E 300 models, offering significantly more power and a more refined driving experience. This variant aimed at buyers seeking a premium convertible experience without venturing into the higher price bracket of the AMG-tuned models. It was primarily marketed towards affluent individuals and couples desiring a stylish and comfortable grand tourer.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class Cabrio (A238) |
| Type (Engine) | E 450 V6 (362 Hp) 9G-TRONIC |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban (EPA) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (economy) – extra urban (EPA) | 8.7 l/100 km (27 US mpg) |
| Fuel consumption (economy) – combined (EPA) | 10.2 l/100 km (23.1 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.1 sec |
| Maximum speed | 210 km/h (130.49 mph), Electronically limited |
| Power | 362 Hp @ 5500-6000 rpm |
| Torque | 500 Nm @ 1800-4500 rpm (368.78 lb.-ft. @ 1800-4500 rpm) |
| Maximum engine speed | 6500 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.823 |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 82.1 mm (3.23 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 12 l (12.68 US qt | 10.56 UK qt) |
| Trunk (boot) space – minimum | 310 l (10.95 cu. ft.) |
| Trunk (boot) space – maximum | 385 l (13.6 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Length | 4826 mm (190 in.) |
| Width | 1860 mm (73.23 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1427 mm (56.18 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Front track | 1598 mm (62.91 in.) |
| Rear (Back) track | 1603 mm (63.11 in.) |
| Front overhang | 841 mm (33.11 in.) |
| Rear overhang | 1112 mm (43.78 in.) |
| Minimum turning circle (turning diameter) | 11.4 m (37.4 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front brakes | Ventilated discs, 360×36 mm |
| Rear brakes | Ventilated discs, 360×26 mm |
| Tires size | Front wheel tires: 245/45 R18 Rear wheel tires: 245/40 R18 |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
At the heart of the E 450 V6 Cabriolet lies the M276.823 engine, a 3.0-liter V6 engine employing direct injection and twin-turbocharging. This engine is a member of Mercedes-Benz’s modular engine family, known for its smooth operation and robust construction. The twin-turbochargers, strategically positioned within the V-angle, minimize turbo lag and provide a broad, flat torque curve. The engine utilizes a four-valve-per-cylinder DOHC (Double Overhead Camshaft) valvetrain, optimizing airflow for enhanced performance. The 9G-TRONIC nine-speed automatic transmission is a key component, offering smooth and efficient gear changes. This transmission is designed to maximize fuel economy while providing responsive acceleration. It features a wide gear ratio spread, allowing the engine to operate within its optimal power band more frequently.
Driving Characteristics
The E 450 V6 Cabriolet delivers a refined and engaging driving experience. The 362 horsepower and 368 lb-ft of torque provide ample power for both relaxed cruising and spirited driving. Acceleration from 0 to 60 mph takes approximately 5.1 seconds, making it a genuinely quick convertible. The 9G-TRONIC transmission contributes to this performance by providing quick and seamless shifts. Compared to the base E 300 models, the E 450 offers a noticeable increase in power and responsiveness. While not as aggressively tuned as the AMG variants, the E 450 provides a satisfying balance between comfort and performance. The rear-wheel-drive configuration contributes to a balanced feel, although traction control is essential when applying full throttle.
Equipment & Trim Levels
The E 450 V6 Cabriolet came standard with a generous array of features, including leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of safety technologies. Standard features also included Mercedes-Benz’s COMAND infotainment system with a large central display screen, navigation, and smartphone integration. Optional extras included air suspension (AIRMATIC), which further enhanced ride comfort, as well as a variety of cosmetic enhancements, such as different wheel designs and interior trim options. The Cabriolet also featured a fully automatic fabric soft top, which could be raised or lowered in around 20 seconds at speeds up to 31 mph.
Chassis & Braking
The A238 E-Class Cabriolet utilizes a sophisticated chassis design, featuring a multi-link suspension at both the front and rear. This suspension setup provides a comfortable ride while maintaining good handling characteristics. The E 450 V6 typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and electronic stability control were standard features, enhancing safety and control. Optional air suspension (AIRMATIC) allowed for adjustable ride height and damping, further optimizing comfort and handling.
Market Reception & Comparison
The E 450 V6 Cabriolet was generally well-received by automotive critics. Reviewers praised its powerful engine, smooth transmission, and luxurious interior. Fuel economy was considered reasonable for a vehicle of its size and performance, averaging around 23.1 US mpg in combined driving. Compared to the E 300 Cabriolet, the E 450 offered a significant performance upgrade, justifying its higher price tag for buyers prioritizing power. However, the E 450 was positioned below the AMG-tuned E 53 Cabriolet, which offered even more performance and a more aggressive driving experience. Reliability reports have been generally positive, with the M276 engine proving to be a durable and dependable unit.
Legacy
The Mercedes-Benz E 450 V6 Cabriolet (A238) remains a desirable used car option. The M276 engine has proven to be relatively reliable, although regular maintenance is crucial. The 9G-TRONIC transmission is also known for its durability. The A238 generation E-Class Cabriolet is appreciated for its elegant styling, luxurious interior, and refined driving experience. As a result, well-maintained examples continue to command respectable prices in the used car market, appealing to buyers seeking a premium open-top experience.
