The Mercedes-Benz S 450e Long (V223) is a plug-in hybrid variant of the flagship S-Class sedan, introduced in May 2022 as part of the V223 generation. Positioned as a technologically advanced and fuel-efficient option within the S-Class lineup, it combines a six-cylinder gasoline engine with an electric motor and a substantial battery pack. Production is expected to continue through 2026. The “Long” designation indicates an extended wheelbase, offering increased rear passenger legroom, a feature particularly valued in markets like China. This model represents Mercedes-Benz’s commitment to electrification within its luxury segment, offering a blend of performance, refinement, and reduced emissions.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class Long (V223) |
| Type | S 450e (408 Hp) Plug-in Hybrid 9G-TRONIC |
| Start of production | May, 2022 |
| End of production | 2026 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 4-5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 0.6-0.9 l/100 km |
| CO2 emissions (WLTP) | 14-21 g/km |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 5.8 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Gross battery capacity | 28.6 kWh |
| Net (usable) battery capacity | 21.96 kWh |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the trunk |
| All-electric range (WLTP) | 95-114 km (59.03 – 70.84 mi) |
| Average Energy consumption (WLTP) | 22.6-25 kWh/100 km |
| Electric motor power | 150 Hp |
| Electric motor Torque | 440 Nm (324.53 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Electric motor type | Synchronous |
| System power | 408 Hp |
| System torque | 650 Nm (479.42 lb.-ft.) |
| Power | 299 Hp |
| Torque | 450 Nm (331.9 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 256.930 |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7.8 l (8.24 US qt | 6.86 UK qt) |
| Coolant | 17 l (17.96 US qt | 14.96 UK qt) |
| Kerb Weight | 2355 kg (5191.89 lbs.) |
| Max. weight | 3070 kg (6768.19 lbs.) |
| Max load | 715 kg (1576.31 lbs.) |
| Trunk (boot) space – minimum | 350 l (12.36 cu. ft.) |
| Fuel tank capacity | 67 l (17.7 US gal | 14.74 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 5289 mm (208.23 in.) |
| Width | 1954 mm (76.93 in.) |
| Width including mirrors | 2109 mm (83.03 in.) |
| Height | 1503 mm (59.17 in.) |
| Wheelbase | 3216 mm (126.61 in.) |
| Front track | 1655 mm (65.16 in.) |
| Rear (Back) track | 1651 mm (65 in.) |
| Front overhang | 877 mm (34.53 in.) |
| Rear overhang | 1196 mm (47.09 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Minimum turning circle (turning diameter) | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | Rear wheel drive. PHEV. |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | Front: 255/45 R19, 255/40 R20, 255/35 R21; Rear: 255/45 R19, 285/40 R19, 255/40 R20, 285/35 R20, 285/30 R21 |
INTRODUCTION
The S 450e Long (V223) represents Mercedes-Benz’s foray into combining the luxury and prestige of the S-Class with the efficiency of plug-in hybrid technology. Introduced in 2022, it builds upon the foundation of the V223 S-Class, known for its advanced driver-assistance systems, opulent interior, and refined ride quality. The “e” designation signifies its electrified powertrain, while the “Long” indicates the extended wheelbase version, prioritizing rear passenger comfort. This variant aims to appeal to buyers seeking a luxurious and technologically advanced vehicle with reduced environmental impact, particularly in regions with strong incentives for electric vehicle adoption.
Powertrain & Engine Architecture
At the heart of the S 450e lies a 3.0-liter inline-six cylinder engine (M 256.930) coupled with a powerful electric motor. The engine utilizes direct injection and a twin-scroll turbocharger to produce 299 horsepower and 450 Nm (331.9 lb-ft) of torque. The electric motor, positioned between the engine and the 9G-TRONIC automatic transmission, contributes an additional 150 horsepower and 440 Nm (324.53 lb-ft) of torque. The combined system output reaches 408 horsepower and 650 Nm (479.42 lb-ft). The 28.6 kWh (gross) / 21.96 kWh (net) lithium-ion battery pack, located under the trunk floor, provides an all-electric range of 95-114 km (59.03 – 70.84 mi) according to WLTP standards. The 9G-TRONIC transmission, a nine-speed automatic, is specifically calibrated to work seamlessly with the hybrid powertrain, optimizing efficiency and performance.
Driving Characteristics
The S 450e delivers a refined and responsive driving experience. In electric mode, the vehicle offers near-silent operation and instant torque, providing brisk acceleration for urban driving. When the gasoline engine engages, the transition is remarkably smooth. The combined power output allows for a 0-60 mph time of approximately 5.6 seconds. The 9G-TRONIC transmission provides smooth and precise gear changes, contributing to a comfortable ride. Compared to the S 580, which features a V8 engine, the S 450e prioritizes efficiency over outright performance. However, the readily available torque from the electric motor compensates for the slightly lower horsepower, making it feel surprisingly quick in everyday driving situations. The weight of the battery pack does add some mass, but the air suspension effectively manages body roll and maintains a composed ride.
Equipment & Trim Levels
The S 450e Long typically comes standard with a high level of equipment, reflecting the S-Class’s position as a luxury flagship. Standard features include leather upholstery, heated and ventilated front seats with massage functions, a Burmester surround sound system, and the latest generation of Mercedes-Benz’s MBUX infotainment system with a large touchscreen display. Optional extras include rear-seat entertainment systems, premium leather options, and advanced driver-assistance features like adaptive cruise control and lane-keeping assist. The extended wheelbase provides ample rear passenger space, making it a particularly appealing option for chauffeur-driven applications.
Chassis & Braking
The S 450e Long utilizes an independent multi-link suspension system at both the front and rear, coupled with Mercedes-Benz’s AIRMATIC air suspension. This combination provides a remarkably comfortable and controlled ride, automatically adjusting the suspension damping based on road conditions and driving style. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The vehicle also incorporates ABS (Anti-lock braking system) and other advanced braking technologies. The steering system is a rack-and-pinion type with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The S 450e Long has been generally well-received by automotive critics, who praise its luxurious interior, smooth ride, and impressive fuel efficiency. Compared to other S-Class variants, the S 450e offers a compelling alternative for buyers prioritizing environmental consciousness and lower running costs. While the S 580 provides more powerful acceleration, the S 450e’s electric range and fuel economy make it a more practical choice for daily commuting and shorter trips. Reliability reports are still emerging, but Mercedes-Benz’s reputation for build quality and engineering suggests that the S 450e should prove to be a durable and dependable vehicle.
Legacy
The S 450e Long represents a significant step in Mercedes-Benz’s electrification strategy. As a plug-in hybrid, it bridges the gap between traditional internal combustion engines and fully electric vehicles, offering a practical and luxurious option for buyers who are not yet ready to fully commit to an EV. The powertrain’s combination of a refined six-cylinder engine and a powerful electric motor is expected to provide long-term reliability, and the vehicle’s advanced technology and luxurious features should ensure its continued desirability in the used car market for years to come. The S 450e sets a benchmark for luxury plug-in hybrids, demonstrating that sustainability and opulence can coexist.
