Head to head
Equi-Trek Sonic Five Seats 3,500kg vs Ifor Williams BV84
The Equi-Trek Sonic Five Seats 3,500kg is rated 2.1 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Equi-Trek Sonic Five Seats 3,500kg is rated 2.1 tonnes heavier gross.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | Ifor Williams BV84 | |
|---|---|---|
| Gross weight | 3500kg | 1400kg |
| Unladen weight | 2500kg | - |
| Axles | - | Single |
| Brakes | - | Braked |
| Size | - | 8ft x 4ft |
Sources: Equi-Trek Sonic Five Seats 3,500kg, Ifor Williams BV84. 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 2.1 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 BV84 if...
Ifor Williams BV84, carried by UK dealers and hire companies listed on GetBrent for sale. A compact braked box van from the Ifor Williams range, bought for lockable, weatherproof carrying of tools, stock and household goods, and one of the most common used box trailers on the UK market.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the Ifor Williams BV84?
The Equi-Trek Sonic Five Seats 3,500kg is rated 2.1 tonnes heavier gross. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the Ifor Williams BV84 is a box van trailer, single axle, 8ft x 4ft.
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the Ifor Williams BV84 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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