generally not recommended to sell used cars with licence plates. A car whose owner has not paid their insurance premium and is reported to the police by the insurance company may get , unstamped when found in a public place. The police will remove the official seal using a scratching tool like a screwdriver, leaving the plate without a valid seal. This renders the vehicle illegal to be used, or to be left in a public place, unless the insurance premium is paid and plates are fitted with a new official seal. A one-time journey to the relevant registration authorities is permitted to have the seal reinstated, once insurance is restored. Costs As of 2020, the average registration fee is €26.00 whilst further fees may apply for choosing an individual identifier or for reservation of such. Whereas some of these amounts are ordained by federal laws, others vary slightly from one district to the next. The prices for number plates, on the other hand, are subject to the free market and range from less than 10€ up to around 40€ per piece. Generally, it is cheaper to have the plates ordered online, but faster to walk across the street and have them made on the spot. Further costs arise for motor vehicle tax (€194 on average yet very much depending on engine and emissions) and mandatory liability insurance (€260 on average, in 2019; depending on the model of the vehicle, age and residence of the owner, etc.). Comprehensive insurance is recommended but voluntary. Special types of registration Besides the most common way of registering a vehicle for everyday, all-year use indefinitely, it is possible to register for several months of each year, or for a few days in order to export the vehicle abroad. As well it is allowed, under certain restrictions, to register two vehicles (such as a car and a motorhome) under one number, with the same main licence plate. These variations may save expenses in tax and insurance. Further ways of saving apply to vintage cars and to electrically powered vehicles. Each of these special registrations are represented in the respective licence plate. Special codes, colours and formats Certain types of vehicle bear special codes. Different codes In deviating from the system described above, vehicles registered to federal, state or communal owners can bear licence plates not showing the district and sometimes omitting the middle letters. Highest