The Mercedes-Benz S-Class Long (V223) S 500 4MATIC, introduced in June 2023, represents the pinnacle of luxury and technology in the flagship sedan range. Positioned as a high-end variant within the V223 generation, which began production in late 2021, the S 500 combines a potent gasoline engine with mild-hybrid technology to deliver both impressive performance and enhanced efficiency. The “Long” designation indicates an extended wheelbase, providing significantly increased rear passenger legroom, catering to markets where chauffeur-driven travel is common. Production is expected to continue through 2026, solidifying its place as a key model in Mercedes-Benz’s luxury lineup.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | S-class |
| Generation | S-class Long (V223) |
| Type | S 500 (449 Hp) EQ Boost 4MATIC 9G-TRONIC |
| Start of production | June, 2023 |
| End of production | 2026 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 4-5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 8.2-9.3 l/100 km (28.7 – 25.3 US mpg) |
| CO2 emissions (WLTP) | 187-211 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.7 sec |
| Acceleration 0 – 62 mph | 4.7 sec |
| Acceleration 0 – 60 mph | 4.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 4.5 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 23 Hp |
| Electric motor Torque | 250 Nm (184.39 lb.-ft.) |
| Power | 449 Hp @ 5800-6100 rpm |
| Torque | 560 Nm @ 2200-5000 rpm (413.03 lb.-ft. @ 2200-5000 rpm) |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 256.830 |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 10.5:1 |
| Kerb Weight | 2030 kg (4475.38 lbs.) |
| Max. weight | 2820 kg (6217.04 lbs.) |
| Trunk (boot) space | 550 l (19.42 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal) |
| Length | 5289 mm (208.23 in.) |
| Width | 1954 mm (76.93 in.) |
| Height | 1503 mm (59.17 in.) |
| Wheelbase | 3216 mm (126.61 in.) |
| Number of gears | 9 |
| Gearbox type | automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The S 500 is powered by the M 256.830 engine, a 3.0-liter inline-six cylinder gasoline engine featuring a turbocharger and an electric powered compressor. This combination delivers both immediate response and high peak power. The engine utilizes direct fuel injection and a sophisticated DOHC valvetrain. Crucially, the S 500 incorporates a 48-volt mild-hybrid system (EQ Boost). This system employs an integrated starter-generator (ISG) that adds 23 horsepower and 250 Nm of torque, assisting the engine during acceleration and enabling features like coasting with engine shut-off to improve fuel economy. The engine’s output is managed by the 9G-TRONIC nine-speed automatic transmission, known for its smooth shifts and wide gear ratios. The transmission is designed to work seamlessly with the mild-hybrid system, optimizing efficiency and performance.
Driving Characteristics
The S 500 offers a driving experience characterized by effortless power and refined comfort. The combination of the turbocharged inline-six and the EQ Boost system results in a 0-60 mph acceleration time of approximately 4.5 seconds. The 9G-TRONIC transmission provides smooth and almost imperceptible gear changes, contributing to a relaxed cruising experience. Compared to the S 450, the S 500 delivers noticeably stronger acceleration, particularly in overtaking situations. While not as overtly sporty as some of its competitors, the S 500 provides ample power for confident and comfortable driving in all conditions. The long wheelbase contributes to a stable and composed ride, even at higher speeds.
Equipment & Trim Levels
The S 500 comes standard with a comprehensive suite of luxury features. Interior appointments typically include premium leather upholstery, wood trim, and ambient lighting. Standard technology includes the latest generation of the MBUX infotainment system with a large touchscreen display, advanced driver-assistance systems (ADAS) such as adaptive cruise control, lane-keeping assist, and automatic emergency braking, and a premium sound system. Optional extras often include features like massaging seats, a rear-seat entertainment system, and upgraded leather options. The extended wheelbase of the “Long” variant prioritizes rear passenger comfort, offering increased legroom and often including features like reclining rear seats and individual climate control.
Chassis & Braking
The S 500 features an independent multi-link suspension at both the front and rear, coupled with an AIRMATIC air suspension system. This combination provides a remarkably smooth and comfortable ride, automatically adjusting the suspension to road conditions. The 4MATIC all-wheel-drive system ensures optimal traction in all weather conditions. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. Advanced safety features like ABS (Anti-lock braking system) and 4-wheel steering (4WS) are standard, enhancing stability and maneuverability.
Market Reception & Comparison
The S 500 has been generally well-received by automotive critics, praised for its luxurious interior, advanced technology, and refined driving experience. Compared to the S 450, the S 500 offers a significant performance upgrade, justifying its higher price point for buyers seeking more power. Fuel economy, while respectable for a vehicle of this size and performance, is not its primary strength, with combined WLTP figures ranging from 8.2 to 9.3 l/100 km. Reliability has been generally good, consistent with Mercedes-Benz’s reputation for build quality, although the complexity of the mild-hybrid system may present potential long-term maintenance challenges.
Legacy
The V223 S-Class, and specifically the S 500 variant, represents a significant step forward in luxury sedan technology. The integration of the mild-hybrid system demonstrates Mercedes-Benz’s commitment to improving fuel efficiency without sacrificing performance. On the used car market, the V223 S 500 is expected to hold its value well due to its prestigious brand image, advanced features, and overall quality. The longevity of the M 256 engine and the 9G-TRONIC transmission are expected to be good, provided that regular maintenance is performed. However, potential buyers should be aware of the potential costs associated with maintaining the complex electronic systems and the mild-hybrid components.
