Adria FORMA 520
Built: 1989–1990 · Series: Trailers up to 3.5 t (Class O2)
More machines from model year 1989
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
The Adria FORMA 520 is a caravan from Adria (EU vehicle class O2), built from 1989 to 1990. It is 5,750 mm long and 2,290 mm wide, weighs 1,030 kg unladen and has a permitted gross weight of 1,260 kg.
Payload for the Adria FORMA 520, i.e. permitted gross weight minus unladen weight, is 230 kg. For a caravan this covers everything that travels along: gas bottles, awning, water, crockery and luggage; retrofitted equipment such as a motor mover or air conditioning reduces the margin further.
Under EU licensing rules, a category B licence allows a combination of towing vehicle and this trailer up to 3,500 kg permitted total mass – so the towing vehicle may weigh at most 2,240 kg. Code 96 on a B licence raises the limit to 4,250 kg (towing vehicle up to 2,990 kg); beyond that a BE licence is required. Being over 750 kg, the trailer must be braked, and the towing vehicle needs a braked towing capacity of at least 1,260 kg.
Among the 210 caravans from Adria with a stated length, the Adria FORMA 520 at 5,750 mm is among the shortest (rank 179); the range runs from 3,030 to 11,034 mm. The Finnish vehicle register lists 2 units.
Adria – class O2 caravans (up to 3.5 t): Slovenian caravans outside the named ranges, 204 versions, unladen weight 100 to 2,512 kg, Adora, Alpina and Unica ranges
Adria is a Slovenian caravan and motorhome manufacturer based in Novo Mesto, founded in 1965 and now part of the Adria Group within the Trigano corporation. This collective page gathers caravans registered as EU class O2 trailers (0.75 to 3.5 tonnes gross vehicle weight) that the register could not assign to a named range, from the compact Action and Altea models to the larger Adora, Alpina and Unica ranges.
Read on 3 more paragraphs
The register lists here 204 versions with unladen weights from 100 to 2,512 kg, gross vehicle weights from 760 to 3,000 kg, lengths from 4,175 to 11,034 mm and widths from 1,875 to 2,550 mm.
Class O2 caravans can be towed on a category B car licence up to 3.5 tonnes combined weight and form the core business of classic caravanning brands; Adria ranks alongside Hobby, Knaus, Tabbert and Fendt among established European manufacturers, with a particular presence in southern and central Europe and Scandinavia. Production in Novo Mesto supplies not only the Slovenian market but also Italy, Austria and Germany, where caravanning counts among the established forms of holiday travel.
When buying used, check above all for moisture damage in the body (sandwich floor, roof skin, window seals), the condition of the axle and overrun brake, the function of the gas system and leisure battery, and the seals at roof hatches and joints. Spare parts run through the Adria dealer network and independent caravan workshops.
Sources: SpecCodex register, model data: Adria (Klasse O2), Adria (manufacturer)
Technical data
Dimensions and weights
| Length | 5,750 mmcorrect |
|---|---|
| Width | 2,290 mmcorrect |
| Unladen weight | 1,030 kgcorrect |
| Gross vehicle weight | 1,260 kgcorrect |
Frequently asked questions
How much does the Adria FORMA 520 weigh?
The unladen weight is 1,030 kg.
What is the gross vehicle weight of the Adria FORMA 520?
1,260 kg.
What are the dimensions of the Adria FORMA 520?
5,750 mm × 2,290 mm.
When was the Adria FORMA 520 built?
Production years: 1989–1990.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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We ask the suppliers and come back with price and lead time.
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This page carries 5 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Other models in this series
1300
130X410
330
350
350/3150
360 LB/330
391 UNICA/3370
410 DELUXE-77
4139E410FB
4149 DO/2900
432 PX-5204/360
450 L-4110
Sources: [1]
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.