Head to head
Equi-Trek Sonic Five Seats 3,500kg vs Woodford Eco Box
The Equi-Trek Sonic Five Seats 3,500kg is rated 3 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Equi-Trek Sonic Five Seats 3,500kg is rated 3 tonnes heavier gross.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | Woodford Eco Box | |
|---|---|---|
| Gross weight | 3500kg | 500kg or 750kg options |
| Unladen weight | 2500kg | 205-275kg depending on size |
| Dimensions | - | 3,080 x 1,595 x 1,960mm external (largest, ECO745) |
| Internal load space | - | 2,100 x 1,175 x 1,470mm (ECO745) |
| Axle | - | Single axle, unbraked |
Sources: Equi-Trek Sonic Five Seats 3,500kg, Woodford Eco Box. 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...
- you want one that is rated 3 tonnes heavier gross
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 Eco Box if...
A lightweight box trailer built to order in Norfolk, bought by tradesmen and small businesses who want secure, lockable load space without the running costs of a van. It comes in four sizes so buyers can match it to what they need to carry.
Listed by
- Lustre trailers - Norwich
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the Woodford Eco Box?
The Equi-Trek Sonic Five Seats 3,500kg is rated 3 tonnes heavier gross. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the Woodford Eco Box is a lightweight single-axle box trailer for general and van-replacement use.
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the Woodford Eco Box 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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