The Mercedes‑Benz S350 is a mid‑range trim in the S‑Class luxury‑sedan family, positioned below the V8‑powered S450/S500 and AMG models but still offering full‑flagship comfort, tech, and refinement. It is typically sold as an S350 petrol (V6) or S350d diesel (twin‑turbo‑six), depending on market and generation, and suits buyers who want S‑Class prestige with more moderate running costs.

Flagship‑level four‑door saloon

The S350 is a four‑door, full‑size executive sedan based on the S‑Class platform (W221, W222, W223 generations), with a long hood, elegant greenhouse, and substantial length of about 5.0–5.1 metres. It comfortably seats five, with a large boot of roughly 500–600 litres, and is available in standard and long‑wheelbase “L” versions in many markets. The exterior styling is understated but imposing, with signature LED headlights and a grille that clearly marks it as an S‑Class.

3.0‑litre V6 petrol and diesel options

Across recent generations, the S350 name has mainly covered two engine types:

• Petrol S350: A 3.0‑litre V6 naturally aspirated or turbo‑charged unit (e.g., 3.5‑litre V6 M272 in W221, rated around 270–272 hp and 350 Nm), paired with a 7‑speed 7G‑TRONIC automatic and rear‑wheel drive, giving 0–100 km/h in about 7–7.5 seconds and a top speed limited to 250 km/h.

• S350d: A 3.0‑litre twin‑turbo V6 diesel producing around 286 hp and 600 Nm, with a 9‑speed automatic and RWD/AWD on some variants, giving 0–100 km/h around 5.3–6.0 seconds and strong mid‑range pulling feel.

Fuel economy is better than V8 S‑Class models, typically in the 7–10 km/l mixed‑use range depending on spec and market.

S‑Class luxury and tech

Inside, the S350 matches higher‑spec S‑classes with soft leather or MB‑Tex upholstery, wood or metallic trim, heated/ventilated front seats, dual‑zone or four‑zone climate control, and a large infotainment screen (COMAND or MBUX, depending on generation). Features commonly include:

• Air‑suspension (AIRMATIC) or adaptive dampers,

• 360‑camera, adaptive cruise, lane‑keeping, blind‑spot monitoring, braking assist, multiple airbags,

• Ambient lighting, panoramic sunroof, premium audio (often Burmester),

• Heated steering wheel, massage seats, rear‑seat controls, and Executive/Premium trim extras on higher‑spec S350d‑L models.

Ideal for executive‑sized luxury buyers

The Mercedes‑Benz S350 suits executives, chauffeur‑driven VIPs, and buyers who want an S‑Class with strong but not extreme performance and lower fuel/consumption costs than V8 models. It works well as a company car, airport‑transfer saloon, or long‑range tourer, giving you the full S‑Class experience—ride quality, noise insulation, and tech—without the higher purchase and running expenses of the big‑displacement units.