British Rail Class 172

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The Class 172 is a diesel multiple unit (DMU) of the Turbostar family similar to the Class 168, Class 170 and Class 171.


  1. "Porterbrook Class 172 DMU" (PDF). Archived from the original (PDF) on 10 December 2015.
  2. "Class 172/0 - London Overground".

British Rail Class 172 Turbostar</th></tr>
The interior of a West Midlands Trains Class 172
In service</th>10 July 2010 - Present
Manufacturer</th>Bombardier Transportation
Family name</th>Turbostar
Constructed</th>2010 - 2011
Number built</th>39 trainsets
Formation</th>2 or 3 cars per trainset
Capacity</th>172/0: 120 seats
172/1: ? seats
172/2: 116 seats
172/3: 188 seats
Operator(s)</th>London Overground
Chiltern Railways
West Midlands Trains
Line(s) served</th>Snow Hill Lines
Chiltern Main Line
Gospel Oak to Barking Line
Car body construction</th>Welded aluminium. Steel ends.
Car length</th>23.62 m (77 ft 6 in)
Width</th>2.69 m (8 ft 10 in)
Height</th>3.77 m (12 ft 4 in)
Maximum speed</th>100 mph (160 km/h)
Weight</th>41.6 tonnes (40.9 long tons; 45.9 short tons)[1]
Prime mover(s)</th>One per car, MTU 6H1800R83
Power output</th>483 hp (360 kW)[2]
Transmission</th>ZF Ecomat-Rail 6 speed
ZF Reversing final drive
Safety system(s)</th>AWS, TPWS
ATP (172/1 only)
Track gauge</th>Template:Track gauge

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