Compare OO Class 25
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| Manufacturer | Hornby | Bachmann Branchline | Bachmann Branchline | Bachmann Branchline | Heljan | Bachmann Branchline | Sutton Locomotive Works | 
| Year model introduced | 1977 | 2001 | 2003 | 2006 | 2021 | 2023 | 2023 | 
| DCC Capability | Motor fitted but no DCC socket. Ringfield motor | DCC Ready. 8-pin socket | DCC Ready. 8-pin socket | DCC Ready. 21-pin socket | DCC Ready. 21-pin socket | DCC Ready. 21-pin socket | DCC Ready. 21-pin socket | 
| Bodyshell | |||||||
| Bodyshells represented (of Prototypes) | |||||||
| Class 25 - ETHEL train heating units (unmotorised) | No | No | No | No | Yes | No | No | 
| Class 25/0 - original/old style - vents on sides | Yes | No | Yes | Yes | No | Yes | No | 
| Class 25/3 - Exhaust (Original) | No | No | No | No | Yes | No | No | 
| Class 25/3 - Exhaust (Revised) | No | No | No | No | Yes | No | No | 
| Class 25/3 - vents on roof "New style" | No | Yes | No | Yes | Yes | No | No | 
| Detailing | |||||||
| Bodyshell - factory-fitted separate details | |||||||
| Door handles | No | No | No | No | Yes | No | No | 
| Etched horn grille | No | No | No | No | Yes | No | No | 
| Exhausts | No | No | No | No | Yes | Yes | No | 
| Fan Grill (etched) | No | No | No | No | Yes | No | No | 
| Fan(s) | No | No | No | No | Yes | No | No | 
| Handrails | Yes | Yes | Yes | Yes | Yes | Yes | No | 
| Jumper cables | No | No | No | No | Yes | Yes | No | 
| Lamp irons | No | Yes | Yes | Yes | Yes | Yes | No | 
| Pipe work | No | No | No | No | Yes | Yes | No | 
| Side grilles (etched) | No | Yes | Yes | Yes | Yes | Yes | No | 
| Chassis/underframe detail | |||||||
| Battery box | Yes | Yes | Yes | Yes | Yes | ? | No | 
| Footsteps | Yes | Yes | Yes | Yes | Yes | ? | No | 
| Fuel tank | Yes | Yes | Yes | Yes | Yes | ? | No | 
| Sanding gear | No | Yes | Yes | Yes | Yes | ? | No | 
| Bodyshell - separately-fitted details - in detailing pack (where applicable) | |||||||
| Bodyside grille plates | No | No | No | No | Yes | No | No | 
| Step plates | No | No | No | No | Yes | No | No | 
| Cab, footplate & interior detail | |||||||
| Crew figure(s) | No | Yes | Yes | Yes | No | ? | No | 
| Detailed & painted | No | Yes | Yes | Yes | Yes | ? | No | 
| Glazing | Yes | Yes | Yes | Yes | Yes | Yes | No | 
| Seating | No | Yes | Yes | Yes | Yes | ? | No | 
| Window wipers | No | Yes | Yes | Yes | Yes | ? | No | 
| Wheel "aesthetics" | |||||||
| Chemically-blackened | Yes | Yes | Yes | Yes | No | ? | No | 
| Painted | No | No | No | No | Yes | No | No | 
| Bufferbeam detail (pre-fitted) | |||||||
| Cosmetic coupling - hook only | No | Yes | Yes | Yes | No | ? | No | 
| Cosmetic screw link coupling | No | No | No | No | Yes | ? | No | 
| Lifeguard | No | No | No | No | Yes | ? | No | 
| Pipework - pre-fitted to front | No | No | No | No | Yes | ? | No | 
| Pipework - pre-fitted to rear | No | No | No | No | Yes | ? | No | 
| Sprung buffers | No | Yes | Yes | Yes | Yes | ? | No | 
| Bufferbeam detail (in detailing pack) | |||||||
| Cosmetic coupling | No | No | No | No | Yes | No | No | 
| Pipework (for front) | No | Yes | Yes | Yes | Yes | ? | No | 
| Pipework (for rear) | No | Yes | Yes | Yes | Yes | ? | No | 
| Snow plough | No | No | No | No | Yes | No | No | 
| Mechanical | |||||||
| Body Construction | No | No | No | No | Plastic with metal parts | Plastic with metal parts | No | 
| Chassis construction | Lightweight | Diecast | Diecast | Diecast | Diecast | Diecast | No | 
| Loco-driven wheels (number of) | 4 wheels | 8 wheels | 8 wheels | 8 wheels | 8 wheels | 8 wheels | No | 
| Minimum radius | Radius 2 | Radius 2 | Radius 2 | Radius 2 | Radius 2 | Radius 2 | No | 
| Coupling socket/mounting | |||||||
| Fixed | Yes | No | No | No | No | No | No | 
| NEM pockets | No | Yes | Yes | Yes | Yes | Yes | No | 
| Non-NEM socket | No | Yes | Yes | No | No | No | No | 
| Coupling type | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | No | 
| Weighting (to assist adhesion) | |||||||
| Within chassis | Yes | Yes | Yes | Yes | Yes | Yes | No | 
| Separating the body from the chassis | Simple to do, without damaging any loco parts | Simple to do, without damaging any loco parts | Simple to do, without damaging any loco parts | Simple to do, without damaging any loco parts | Secured with one or more screws | Secured with one or more screws | No | 
| Electrical | |||||||
| Motor type | Ringfield | Can motor with 2 Flywheels | Can motor with 2 Flywheels | Can motor with 2 Flywheels | 5-pole with two flywheels | 5-pole with two flywheels | No | 
| Motor location | 1 bogie mounted | Centre of chassis | Centre of chassis | Centre of chassis | Centre of chassis | Centre of chassis | No | 
| Power collection | 2 rail DC | 2 rail DC | 2 rail DC | 2 rail DC | 2 rail DC | 2 rail DC | No | 
| Working lights | |||||||
| Cab light | No | No | No | No | Yes | Yes | No | 
| Directional headlights & tail lights | No | No | Yes | Yes | Yes | Yes | No | 
| Illuminated headcodes | Yes | Yes | Yes | Yes | Yes | No | No | 
| Tail lights (independent) | No | No | No | No | Yes | No | No | 
| Pickups | 3 out of 4 axles | All wheels | All wheels | All wheels | All wheels | All wheels | No | 
| DCC speaker | No provision for speaker | Provision for 28mm round speaker | Provision for 28mm round speaker | Provision for a speaker (dimensions unknown) | Provision for 20x40mm rectangular speaker | Pre-fitted | No | 
| Items in Stock | View | View | View | View | View | View | View |