| Vehicle type: | DMBS | DMC++ | DTC +++ | TCL ++++ |
| Classification: | 105 | 105 | 105 | 105 |
| Original classification: | 105/2 or 106+ | 105/1 | 141 | 170 |
| Original number range: | 50249, 50359-50394, 50752-50784 | 50785-50817 | 56114-56149, 56412-56483 | 59307-59325 |
| Revised number range: | 53249, 53359-53394, 53752-53784 | 53785-53817 | 54114-54149, 54412-54483 | - |
| Classification: | DMBS | DMC | DTC | TCL |
| Introduced: | 1956-59 | 1957 | 1956-58 | 1956 |
| Built by: | Cravens RCW | Cravens RCW | Cravens RCW | Cravens RCW |
| Vehicle length (over body): | 17.53m | 17.53m | 17.53m | 17.53m |
| Height: | 3.83m | 3.83m | 3.83m | 3.83m |
| Width: | 2.81m | 2.81m | 2.81m | 2.81m |
| Seating: | 52S | 12F/51S or declassified - 63S | 12F/51S or declassified 63S | 12F/54S or 69S |
| Internal layout: | 2+3 | 2+3 | 2+3 | 2+3 |
| Gangway: | Inner end | Inner end | Inner end | Throughout |
| Toilets: | Not fitted | 1 | 1 | 1 |
| Weight: | 29.5 tonnes | 30.5 tonnes | 23.5 tonnes | 23 tons |
| Brake type: | Vacuum | Vacuum | Vacuum | Vacuum |
| Power unit: | 2 x BUT (AEC) of 150hp per vehicle | 2 x BUT (AEC) of 150hp per vehicle | - | - |
| Horsepower (total): | 300hp | 300hp | - | - |
| Transmission: | Mechanical | Mechanical | - | - |
| Max speed: | 70mph | 70mph | 70mph | 70mph |
| Coupling type: | Screw | Screw | Screw | Screw |
| Multiple restriction: | Blue square | Blue square | Blue square | Blue square |
| Door type: | Slam | Slam | Slam | Slam |
| Special features: | ||||
| Body structure: | Steel | Steel | Steel | Steel |
| Notes: | + Class 106 originally allocated to cars fitted with Leyland power units | ++ later declassified to DMS | +++ later declassified to DTS | ++++ later declassified to TSL |