Head to head
Equi-Trek Sonic 3,500kg vs Ifor Williams GP126
The Ifor Williams GP126 is 1,540kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Sonic 3,500kg weighs 1,540kg more empty.
Specifications side by side
| Equi-Trek Sonic 3,500kg | Ifor Williams GP126 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 2320kg | 780kg (skids) or 795kg (ramp) |
| Internal length | - | 3.66m/12' |
| Internal width | - | 1.78m/5'10" |
Sources: Equi-Trek Sonic 3,500kg, Ifor Williams GP126. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic 3,500kg if...
A compact motorised horsebox pitched as easy to drive day to day, for owners of one or two horses who want a small horsebox rather than a trailer and tow car. It is one of Equi-Trek's lower-cost motorised models.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Buy or hire the GP126 if...
- you want one that is 1,540kg lighter empty
A twin-axle general purpose trailer from Ifor Williams's plant range, used to carry mini diggers, dumpers and other small plant, or general building materials. Available with loading ramps or skids.
Listed by
- East Midlands Trailers - Leicester, Thrussington
Common questions
What is the difference between the Equi-Trek Sonic 3,500kg and the Ifor Williams GP126?
The Ifor Williams GP126 is 1,540kg lighter empty. The Equi-Trek Sonic 3,500kg is a compact 3.5 tonne motorised 2-horse horsebox; the Ifor Williams GP126 is a general purpose plant trailer.
Which is lighter, the Equi-Trek Sonic 3,500kg or the Ifor Williams GP126?
The Ifor Williams GP126. It is 1,540kg lighter empty than the Equi-Trek Sonic 3,500kg.
Can I tow the Equi-Trek Sonic 3,500kg or the Ifor Williams GP126 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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