Manufacturing year 2023
This in-depth review covers engine specs, performance data, exterior and interior highlights, safety technology, and ownership costs.
Let’s Dive In
The 2023 Mercedes-Benz S 350 d represents the diesel-mild-hybrid flagship of the W223 S-Class generation. It combines a 2.9 L OM 656 inline-6 diesel engine with a 48 V EQ Boost mild-hybrid motor and a 9-speed 9G-Tronic automatic transmission, achieving an ideal blend of power, refinement, and efficiency.
Exterior Design Highlights
- MULTIBEAM LED headlamps with automatic high-beam adjustment
- Panoramic glass roof with electrochromic dimming
- AIRMATIC adaptive air suspension for superior ride comfort and stability
- Aerodynamic 19–21-inch alloy wheels
- Sculpted body lines, chromed accents, and a distinctive front grille
Engine and Performance
| Specification | Detail |
|---|---|
| Engine | 2.9 L OM 656 inline-6 diesel |
| Mild-Hybrid System | 48 V EQ Boost motor (23 hp, 250 Nm) |
| Power | 286 PS (210 kW) @ 3,400 rpm |
| Torque | 600 Nm @ 1,200–3,200 rpm |
| Transmission | 9-speed 9G-Tronic automatic |
| Drivetrain | Rear-wheel drive (4MATIC optional) |
| 0–100 km/h | 6.4 seconds |
| Top Speed | 250 km/h (electronically limited) |
Dimensions and Capacity
| Dimension | Measurement |
|---|---|
| Length | 5,179 mm |
| Width (w/o mirrors) | 1,954 mm |
| Height | 1,503 mm |
| Wheelbase | 3,106 mm |
| Boot Capacity | 540 L |
| Fuel Tank Capacity | 76 L |
| Seating Capacity | 5 seats |
All figures based on WLTP standards.
Interior Comfort and Technology
- MBUX multimedia system with two 12.8-inch touchscreen displays
- 64-color ambient lighting with customizable moods
- Multi-contour front seats with heating, ventilation, and massage functions
- Active Noise Cancellation for a serene cabin atmosphere
- Rear-seat entertainment package with dual screens and Wi-Fi hotspot
Safety and Driver Assistance
- PRE-SAFE® preventive occupant protection
- Active Brake Assist with pedestrian detection
- 360° surround-view camera for parking and low-speed maneuvering
- Lane Keeping Assist and Lane Change Assist
- Adaptive Cruise Control with Distance Pilot DISTRONIC
Connectivity & Infotainment
- Head-Up Display projecting key driving data onto the windshield
- Wireless Apple CarPlay and Android Auto
- Burmester® 4D surround-sound system
- Built-in Wi-Fi hotspot and multiple Bluetooth pairings
- Natural-language voice control
Maintenance and Ownership Costs
- Standard warranty: 3 years or 100,000 km
- Recommended service interval: every 20,000 km or 12 months
- Estimated annual maintenance: USD 1,200–1,800
- Insurance: premium-segment rates apply
Why Choose the 2023 S 350 d?
- Outstanding diesel efficiency: combined WLTP consumption of 6.6 L/100 km
- Abundant low-end torque for effortless acceleration
- EQ Boost mild-hybrid adds seamless power delivery and smoother start-stop operation
- Luxurious, technology-rich cabin environment
- Strong brand reputation and high residual values
Frequently Asked Questions
Q1: What is the fuel economy of the S 350 d?
Combined WLTP consumption is 6.6 L/100 km.
Q2: How much extra power does the EQ Boost system provide?
The 48 V EQ Boost motor adds 23 hp and 250 Nm of torque.
Q3: Where is the S 350 d manufactured?
It’s built at Mercedes-Benz’s Sindelfingen plant in Germany.
