Head to head
Mercedes-Benz S-Class Saloon Long vs Poseidon 620 Workboat
The Poseidon 620 Workboat is 90cm (3ft) longer.
Last reviewed 13 September 2026
Key differences
- Length: the Poseidon 620 Workboat is 90cm (3ft) longer.
Specifications side by side
| Mercedes-Benz S-Class Saloon Long | Poseidon 620 Workboat | |
|---|---|---|
| Length | 5,304mm | 6.20m |
| Width | 1,921mm (excl. mirrors) | - |
| Boot capacity | 515-535 litres (combustion engines) | - |
| Seats | 5 | - |
| Engine options | S350d L 4MATIC diesel, S450e L / S580e 4MATIC L plug-in hybrid, S500 L 4MATIC petrol | - |
| Beam | - | 2.50m |
| Weight | - | 630 kg |
| Horsepower | - | 30-150 HP |
| Passengers | - | 11 |
Sources: Mercedes-Benz S-Class Saloon Long, Poseidon 620 Workboat. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the S-Class Saloon Long if...
Mercedes' flagship saloon in long-wheelbase form, the standard car for UK chauffeur firms rather than self-drive hire. The extended wheelbase adds rear legroom rather than luggage space, which stays much the same as the standard car.
Listed by
- Anytime Chauffeurs - London
Buy or hire the 620 Workboat if...
- you want one that is 90cm (3ft) longer
A small open workboat used for harbour work, diving support and general marine tasks, sold through UK boat dealers rather than direct from the builder.
Listed by
- Boatsmart - Southampton, Swanwick
Common questions
What is the difference between the Mercedes-Benz S-Class Saloon Long and the Poseidon 620 Workboat?
The Poseidon 620 Workboat is 90cm (3ft) longer. The Mercedes-Benz S-Class Saloon Long is a long-wheelbase flagship luxury saloon; the Poseidon 620 Workboat is a small aluminium workboat.
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