Head to head
Equi-Trek Sonic Five Seats 3,500kg vs Ifor Williams HB610
The Ifor Williams HB610 is 1,050kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Sonic Five Seats 3,500kg weighs 1,050kg more empty.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | Ifor Williams HB610 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 2500kg | 1450kg |
| Payload | - | 2050kg |
| Internal length | - | 4.25m |
| Internal width | - | 2.07m |
Sources: Equi-Trek Sonic Five Seats 3,500kg, Ifor Williams HB610. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic Five Seats 3,500kg if...
A five-seat cab variant of the Sonic, aimed at families or small teams who want to travel together to competitions rather than sending a second car. It carries the same horse capacity as the standard Sonic.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Three Counties - Hereford
Buy or hire the HB610 if...
- you want one that is 1,050kg lighter empty
Bought by owners with two large horses, up to 17.2hh, who need the widest and roomiest trailer Ifor Williams builds at 3500kg, rather than stepping up to a horsebox lorry.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the Ifor Williams HB610?
The Ifor Williams HB610 is 1,050kg lighter empty. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the Ifor Williams HB610 is a ifor Williams' largest standard double horsebox trailer.
Which is lighter, the Equi-Trek Sonic Five Seats 3,500kg or the Ifor Williams HB610?
The Ifor Williams HB610. It is 1,050kg lighter empty than the Equi-Trek Sonic Five Seats 3,500kg.
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the Ifor Williams HB610 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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