Rolling stock › FamiliesData updated
Desiro City 3 classes
Siemens' Desiro City: electric trains of one platform, built by Siemens Mobility for Thameslink (the Class 700), Great Northern (the 717) and, now, Southeastern (the 707).
The classes side by side
Whole trains at one scale. Each name links to its class page.
Schematic side elevations from each train's recorded dimensions, standing on the same rail. Choose 1× to see them at the stated 10 px per metre, or 2× or 4× to look closer, and scroll or drag sideways; Full screen shows the line-up alone. Drawings labelled indicative are estimates, from photographs and published figures, where no dimensioned drawing has been published. Lengths are over couplers where published; “about” marks one added up from the cars and the couplers between them, as drawn. People are seats plus standing at five per square metre, where both are published; otherwise seats are shown where published, so sorting by capacity puts a seats-only figure among the people figures, and trains with neither come last. Compare any two or three trains →
The classes
| Class | Lines and operators | Since | Trains | Formation | Power | Car length | Doors per side | Seats |
|---|---|---|---|---|---|---|---|---|
| Class 700 Desiro City | Thameslink | 2016 | 115 | 8 cars (531 ft (162.0 m)) or 12 cars (796 ft (242.6 m)); the 12-car trains are formed DMOC-PTOSL-MOSB-MOSL-TOS-TOSW-TOSLW-TOS-MOSL-MOSB-PTOSL-DMOC | 25 kV AC overhead and 750 V DC third rail | 66 ft 2 in20.16 m to 67 ft 4 in20.52 m | 2 | 672 |
| Class 707 Desiro City | Southeastern | 2017 | 30 | 5 cars (DMOS-TOS-TOS(L)W-(P)TOS-DMOS), 333 ft (101.5 m) | 750 V DC third rail | 66 ft 2 in20.16 m to 67 ft 4 in20.52 m | 2 | 271 |
| Class 717 Desiro City | Great Northern | 2018 | 25 | 6 cars (399 ft (121.7 m)) | 25 kV AC overhead and 750 V DC third rail; 1,200 kW at the wheels | 66 ft 2 in20.16 m to 67 ft 4 in20.52 m | 2 | 362 |
What they share, and how they differ
Shared
- Bogies: Siemens SF7000 bogies, one drawing of them on all 3 classes.
- Car width: 9 ft 2 in (2.80 m).
- Car length: 66 ft 2 in (20.16 m) to 67 ft 4 in (20.52 m).
- Doors per side: 2 on every class.
Related
Sources
How we source figures → · Spotted a mistake? Tell us → (opens in a new tab)
- British Rail Class 700 (a Desiro City unit; the 707 and 717 as versions of the Desiro City platform; Desiro City developed from Siemens' Desiro UK and Desiro Mainline designs) Wikipedia, read 13 October 2026the Class 700 as a Desiro City unit, and the 707 and 717 as versions of the Desiro City platform
Each class's own page lists the sources for its figures.
unverified the Desiro UK classes (185, 350, 360, 380, 444, 450) are not in this family; they have their own page, Desiro UK, whose sources place them
Know a source for this? Send it to us → (opens in a new tab)