In brief:
- The vehicle registration certificate states the maximum authorised mass, but the unladen weight does not include all your cargo. Weigh the motorhome with fuel, passengers, water, gas and luggage before departure.
- A category B licence is sufficient for a trailer with a maximum authorised mass of up to 750 kg. For a combined mass of 3,500–4,250 kg, you need code 96; heavier combinations require category BE. Check the vehicle’s towing limit as well.
- Before booking, request a copy of the vehicle registration certificate, check the maximum authorised trailer mass, and tell the rental company how many passengers and how much luggage you will have.
- A more compact model is easier to handle on narrow roads. A short trial rental can help you decide whether driving and operating the living-area equipment suit you.
Table of contents
- What does the 3,500 kg limit in the registration certificate mean?
- Towing a trailer: when is category B sufficient, and when do you need code 96 or BE?
- How to check in practice that you do not exceed the maximum authorised mass
- What to ask the rental company and how to choose a model for category B
- Why I recommend a trial weekend before heading further afield
- How we can help with your rental
- Frequently asked questions
- Sources
What does the 3,500 kg limit in the registration certificate mean?
According to the rules outlined by AMZS, a category B licence allows you to drive vehicles with a maximum authorised mass (MAM) of no more than 3,500 kg and no more than eight passenger seats in addition to the driver’s seat. For a motorhome, this means two things: the relevant figure is the maximum mass specified by the manufacturer, not the vehicle’s length or appearance. You can find the MAM in the vehicle registration certificate. The certificate also contains technical details based on the vehicle’s type approval, which confirms that the vehicle complies with applicable regulations. Always check the registration certificate yourself rather than relying solely on verbal information. You need to distinguish between three terms:- Maximum authorised mass (MAM) is the maximum total weight the vehicle must not exceed when fully loaded.
- Unladen weight is the weight of the empty vehicle prepared for driving.
- Payload is the remaining capacity available for passengers, luggage, water, gas and additional equipment.
The most common mistake is overlooking the actual weight of the vehicle in use. The Slovenian Traffic Safety Agency warns that additional equipment, passengers, water and luggage can quickly bring a motorhome to or beyond its maximum authorised mass, increasing braking distances and reducing vehicle stability.An overloaded motorhome is not just a regulatory issue. It brakes less effectively, leans more in corners, and puts extra wear on the tyres and brakes. The consequences are especially noticeable on Slovenia’s steep roads and hairpin bends, where there is little margin for error.
Towing a trailer: when is category B sufficient, and when do you need code 96 or BE?
Towing is one area where drivers most often get the rules wrong. The Slovenian Traffic Safety Agency explains three main scenarios:- Light trailer with a maximum authorised mass of up to 750 kg: category B is sufficient, provided the combined mass remains within the permitted limits.
- Code 96: applies when the combined maximum authorised mass of the towing vehicle and trailer is between 3,500 and 4,250 kg. You must complete the required training and have code 96 entered on your driving licence.
- Category BE: is required for larger trailers when the combination exceeds the limits for a light trailer and code 96.
How to check in practice that you do not exceed the maximum authorised mass
A proper calculation takes a little time, but a mistake can ruin your entire holiday. Follow these steps:- Take the vehicle registration certificate and note the maximum authorised mass and unladen weight.
- Check what is already included in the unladen weight (usually the driver and operating fluids) and what is not.
- Before departure, weigh the loaded vehicle at a public weighbridge, for example at a larger transport company or quarry. If you are renting, discuss this with the rental company when collecting the vehicle.
- Calculate the available payload: maximum authorised mass minus unladen weight and permanent equipment.
- Subtract the weight of passengers, luggage, food, water, gas and bicycles.
- If only a few dozen kilograms of payload remain, remove some of the load.
The actual situation matters, not just the paperwork. According to the Slovenian Traffic Safety Agency, you should check your driving licence category and the vehicle’s dimensions before every trip. In addition to weight, height and width are important when planning your route.Expert tip: Weigh the vehicle as you will actually drive it: with fuel, passengers and all your luggage. Weighing an empty vehicle tells you very little. Prepare a short checklist before collection: maximum authorised mass, number of seats, additional equipment, installed racks, tyre condition and fluid levels.
What to ask the rental company and how to choose a model for category B
Ask the rental company clear questions before booking. A good rental provider will be happy to answer them all.- Request a copy of the vehicle registration certificate or written confirmation of the selected vehicle’s maximum authorised mass.
- Ask what load the rental company recommends for your number of passengers.
- Check whether a practical demonstration of driving the vehicle and operating the living area is included at collection.
- Ask whether they can help you pack and distribute the load.
- Check the minimum age requirements and surcharges so there are no surprises when you pay.
While your trip is still in the planning stage, you can use our Slovenia motorhome trip planner. For day trips and local recommendations, try LetsVisit Slovenia, a personal assistant for planning excursions.
Why I recommend a trial weekend before heading further afield
In practice, I find that category B drivers often feel most uncertain not about driving itself, but about using the living area. They may not know where the gas shut-off valve is or how to empty the toilet. A short first trip helps build confidence with these tasks.- When you collect a vehicle from us, we check the documents and demonstrate how the vehicle works in practice.
- A trial weekend is a practical way to see whether the vehicle’s size suits you.
- The rental provider can offer information, weighing assistance and advice, but cannot grant you driving privileges that are not covered by your licence.
— Rok
How we can help with your rental
Our vehicles are collected in Ljubljana and are suitable for trips around Slovenia and neighbouring countries. The Mercedes V Marco Polo and Ford Nugget Plus are compact campervans. Before you book, we can help you check the relevant weight information for your chosen vehicle.
- When making a reservation, ask about the maximum authorised mass and the information shown in the registration certificate.
- Tell us how many passengers you will have and how much luggage you plan to bring so we can advise you on loading.
- Arrange a practical demonstration of the vehicle when you collect it.
Frequently asked questions
Can I drive a motorhome with a category B licence?
Yes, provided the motorhome has a maximum authorised mass of up to 3,500 kg and no more than nine seats, including the driver’s seat. According to AMZS, these are the category B requirements in Slovenia. Check the details in the vehicle registration certificate first.Where can I find the maximum authorised mass in the vehicle documents?
The maximum authorised mass is listed in the vehicle registration certificate. It is a technical specification based on the vehicle’s type approval. If you cannot find it, ask the rental company before booking.What do I need to tow a trailer with a motorhome?
A category B licence is sufficient for a light trailer with a maximum authorised mass of up to 750 kg. For a combined mass of 3,500–4,250 kg, you need code 96, while larger trailers may require category BE. The Slovenian Traffic Safety Agency explains the rules. Always check the towing vehicle’s limits in its type-approval documents as well.How do I know if my motorhome is overloaded?
Weigh the loaded vehicle at a public weighbridge and compare the result with the maximum authorised mass in the registration certificate. Include passengers, water, gas and luggage. If little payload capacity remains, reduce the load.Sources
- AMZS
- Safe motorhome travel: freedom that requires greater knowledge and responsibility — Slovenian Traffic Safety Agency



