📷 Photo by Artists Eyes on UnsplashGas abroad: bottle types, adapters and refilling in Europe
No single bottle standard exists in Europe. How propane and butane differ, which adapters and refillable systems help, and what the German gas inspection means.
By CampingSpirit Editors · September 27, 2026 · 5 min read
Gas is the one supply a motorhome cannot simply plug into. Electricity has the same socket almost everywhere in Europe and water has a hose, but a gas bottle that fits perfectly at home may be useless two borders away. Cooking, heating and the fridge all depend on it, so the question of what to do when the bottle runs out belongs in the planning for any longer trip.
The problem is not the gas itself but the hardware around it. Bottle sizes, valve threads, deposit systems and filling rules were set nationally, and no European standard unifies them. The sections below explain what is on offer, what an adapter can and cannot do, and what to check before leaving.
Propane or butane
Both gases are liquefied petroleum gas, but they behave differently in the cold. According to the motorhome reference openvan.camp, propane keeps vaporising down to about minus 42 degrees Celsius, while butane stops vaporising at around minus 0.5 degrees. In practice butane gives little or no gas on a frosty night, and a heater may fail exactly when it is needed. Propane is the better choice for winter and for mountain regions, and most motorhome appliances are set up for it. Campingaz bottles are widely available but are largely butane-based, and promobil notes that butane cannot be used below freezing. Two 11 kg bottles typically last six to eight weeks in summer and about two weeks of continuous heating in winter, according to Malibu.
Why a bottle does not fit everywhere
German grey steel bottles are only exchanged or refilled in a few neighbouring countries. Promobil lists the Benelux countries, Austria and the Czech Republic as easy, with Poland and Slovenia usually needing no adapter. In France German bottles cannot be refilled, but rental bottles with a deposit are available at campsites and petrol stations, and an adapter set is needed for the connection. In Italy German bottles can be refilled with an adapter set, and in Spain portable bottles are exchanged only through local deposit systems with their own regulator and hose connector, while in Switzerland the usual exchange is not offered and larger campsites rent out a bottle with regulator. Sweden and Finland are described as difficult for foreign bottles, with AGA rental bottles as the local option, promobil reports that in Norway LPG Norge refills all bottle types, and Greece has gas mostly in larger towns.
Because national practice changes, any list is a guide only. A campsite reception is the most reliable first contact: many keep stock or know the nearest supplier. A foreign bottle will normally not be exchanged for a German one, so what is bought abroad is either a rental with a deposit or a bottle that must be returned in that country.
Adapters: what they do
An adapter set connects the bottle fitting of one country to the regulator or filler of another. Two kinds are common. The first, often sold as a Euro extraction set, lets a German regulator draw gas from a foreign bottle. The second, a filling set, lets a bottle be refilled abroad. The openvan.camp guide names three main filler types for refillable systems: ACME thread in most of Europe, the Dish type in the United Kingdom and Ireland, and the Polish bayonet in Poland, Czechia, Hungary and Slovakia. Kits cost roughly 15 to 25 euros, according to that source. An adapter does not change the pressure or the size of the thread inside the camper, so hose and regulator must be in good condition and rated for the gas used.
Refillable bottles and tanks
Only refillable models, such as Gaslow, Alugas, Truma TravelPower or a fixed tank, can be filled at an autogas pump. Standard exchange bottles from Calor or Campingaz have no filling valve. Refillable cylinders have an automatic stop that cuts off at about 80 per cent, so overfilling should not happen, but the stop should be checked before each trip. Autogas is a propane and butane mixture whose ratio can differ by country and season, so its winter performance is not always the same as pure propane. Some regions limit this practice: openvan.camp states that Portugal and some Italian regions prohibit self-service refilling of cylinders at petrol stations and that dedicated LPG dealers should be used instead.
A fixed underfloor tank is the most convenient solution for those who tour for months, because it is filled like a car tank and needs no bottle swapping. It does cost more to install and requires the correct adapters at the pump.
Gas inspection in Germany
Germany introduced a recurring gas inspection for camping vehicles with a permanently installed liquefied gas system. TÜV SÜD gives 19 June 2025 as the start date, with a 24-month interval and the technical rule DVGW G 607 as the standard. It is a holder obligation, separate from the general vehicle inspection, and the same source warns that a vehicle without a valid gas inspection sticker may be turned away at many campsites. It applies to German-registered vehicles; owners of other vehicles should ask their own authority or insurer. Hoses and regulators are checked as part of the inspection, and the check is a good moment to replace ageing parts.
Before leaving
A short routine reduces the risk of running out. Weigh or check the contents of every bottle, carry one full spare within the limits of ferries and tunnels, pack the adapters that match the route, keep the hose and regulator dates in view, and note two or three suppliers on the route in advance. For winter trips use propane, and keep the gas locker free of luggage and ventilated. If the smell of gas appears, close the bottle valve, open doors and windows, switch off all flames and electrical switches and leave the vehicle until the leak has been found.
