Head to head
Equi-Trek Sonic Five Seats 3,500kg vs Erde 143
The Erde 143 is 2,402kg lighter empty. The Equi-Trek Sonic Five Seats 3,500kg is rated 2.9 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Sonic Five Seats 3,500kg weighs 2,402kg more empty.
- Gross weight: the Equi-Trek Sonic Five Seats 3,500kg is rated 2.9 tonnes heavier gross.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | Erde 143 | |
|---|---|---|
| Gross weight | 3500kg | 600kg |
| Unladen weight | 2500kg | 98kg |
| Internal length | - | 1.44m |
| Internal width | - | 0.99m |
| Internal height | - | 0.40m |
| Payload | - | 502kg |
Sources: Equi-Trek Sonic Five Seats 3,500kg, Erde 143. 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 2.9 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 143 if...
- you want one that is 2,402kg lighter empty
The Erde 143 is a step up in size from the Erde 102, still light enough for many family cars to tow without a braking system, and commonly used for camping, tip runs and light gardening or DIY loads. Its tipping body and low unladen weight make it a popular first trailer for private buyers.
Listed by
- Towy Trailer Centre - Llandeilo, Ffairfach
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the Erde 143?
The Erde 143 is 2,402kg lighter empty. The Equi-Trek Sonic Five Seats 3,500kg is rated 2.9 tonnes heavier gross. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the Erde 143 is a a single-axle, unbraked general-purpose trailer with a tipping body, larger than the Erde 102..
Which is lighter, the Equi-Trek Sonic Five Seats 3,500kg or the Erde 143?
The Erde 143. It is 2,402kg lighter empty than the Equi-Trek Sonic Five Seats 3,500kg.
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the Erde 143 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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