reference will now be made in detail to the preferred embodiments of the present invention , examples of which are illustrated in the accompanying drawing , wherein like reference numerals refer to like elements throughout . the driver of the motor vehicle 10 is looking for a parking spot and has accordingly activated a search mode in a navigation apparatus 28 of the motor vehicle 10 . the navigation apparatus 28 has then requested feature data pertaining to suitable parking spots in the environment of the current position of the motor vehicle 10 from a server 30 on the internet 32 and has received said data from the server 30 . the communication link between the navigation apparatus 28 and the server 30 is provided by a mobile radio module 34 of the motor vehicle 10 . by way of example , the mobile radio module 34 may be a umts module , an lte module or a gsm module . using the communication module 34 , the navigation apparatus 28 interchanges communication data with a mobile radio network 36 that is coupled to the internet 32 . the server 30 may be a single computer or an arrangement comprising a plurality of computers . the server 30 is an information device for storing feature data pertaining to parking spots . the navigation apparatus 28 may be set up to display on a screen 38 of the motor vehicle 10 , for example a screen of an infotainment system , a road map 40 on which the possible parking spots for which feature data have been received to display . in the example shown , a total of 5 parking spots 42 , 44 , 46 , 48 , 50 are marked on the road map 40 . the parking space 26 corresponds to the parking spot 44 . a locating device ( not shown ) of the motor vehicle 10 , for example a radar sensor or an ultrasonic sensor , may have been used by the navigation apparatus 28 to identify that the parking spots 42 and 46 are occupied by the vehicles 22 and 20 , respectively . behind a street corner , outside the field of vision of the driver , there are further parking spots 48 , 50 . whether these are occupied cannot be measured by the navigation apparatus 28 , however . in the present example , the navigation apparatus 28 displays such a rating in the form of a mark in the road map 40 for each potentially available parking spot 44 , 48 , 50 . the mark may either have been received directly from the server 30 for each parking spot 44 , 48 , 50 or may have been computed by the navigation apparatus 28 from the feature data received from the server 30 . the navigation apparatus 28 may additionally be designed to actuate a head - up display unit 52 of the motor vehicle 10 . by virtue of the control signals from the navigation apparatus 28 , the head - up display unit 52 identifies the parking space 26 on the windshield 12 by a marker 54 . by way of example , the marker 54 may be a frame that frames the parking space 26 from the perspective of the driver . a color for the marker 54 may be stipulated on the basis of the mark for the parking spot . in addition or as an alternative to the marker 54 , it is furthermore possible for the mark to be displayed as appropriate symbol 56 on the windshield 12 by the head - up display unit 52 . in the present example , the mark is formed by a number , with a larger number specifying better suitability of the parking spot for parking the motor vehicle 10 . the display of the rating , that is to say in this case the mark , makes it very much easier for the driver of the motor vehicle 10 to find a suitable parking spot . in summer , he can see from the ratings whether the vehicle will be in shade during the parking time , which means that he does not need to especially switch on the air - conditioning system after returning to the motor vehicle 10 in order to cool down the motor vehicle 10 again . in winter , the rating indicates to him whether the parking spot can be expected to have snow collecting on the windshield 12 and freezing over thereon during parking , which means that he would need to scrape ice next morning . for the ratings , the navigation apparatus 28 or the server 30 uses information pertaining to parking spots that allow the rating to be used to perform prioritization for the parking spot search . the prioritization can also be performed in automated fashion by the motor vehicle 10 by virtue of the navigation apparatus 28 taking the driver directly to the most suitable parking spot . the rating on the basis of insolation can be made possible on the basis of feature data pertaining to the respective parking spots , said data being captured by vehicles parked in said parking spots previously . by way of example , what is known as data logging , that is to say concomitant writing of measured values , can be performed for other vehicles and this allows ascertainment of what insolation is captured at the parking spot by photosensor systems or temperature sensors , for example . these data are then transmitted to the database of the server 30 as feature data , each parking spot being able to be defined explicitly by an identification number . a degree of icing on a vehicle in winter can also be ascertained or estimated by vehicles that have parked in a particular parking spot previously . by way of example , an estimation is / are made possible by a humidity measurement in combination with a temperature measurement and the taking of a camera picture and also a time measurement pertaining to the time the driver requires when scraping . alternatively , it is possible for such ratings ( e . g . insolation and degree of icing ) to be left to be made by the driver of the respective vehicles himself . in this case , the driver can be asked to forward the information , for example via his navigation appliance or his infotainment system , or he can also provide the rating independently himself . further possible parameters for parking spots that can be used for the rating are as follows : it is possible to take account of the fact whether or not a parking spot is covered . it is also possible to detect whether the parking spot is in a well - frequented road . this may be beneficial insofar as thieves struggle more when they are observed . by contrast , a parking spot in a well - frequented road is rather unattractive if the road is what is known as a party road along which normally drunken people rowdily move along the parked vehicles . if it is not possible to look online , that is to say using an internet browser on the internet , for example , for whether the parking spot is free , it may be advantageous to know whether or not everything is at least often or less often blocked in at a particular parking spot . the availability of a parking spot too , i . e . an indication of how often the parking spot is occupied , may therefore be a parameter for rating a parking spot . one possible implementation for detecting availability involves the navigation appliances of vehicles reporting empty runs by said vehicles to the server 30 and an analysis of frequency being performed on the basis thereof . a further parameter is an estimated footpath to an actual destination of a trip if this is input into a navigation appliance of a motor vehicle or is automatically identified by a vehicle , as may be the case for a journey home , for example . the feature data from the individual vehicles , which may then comprise one or more of said parameters or else further parameters , can be combined with the information concerning when the parking spot will probably be driven away from again , that is to say when the driver wishes to drive away the motor vehicle 10 again . this results in further opportunities for rating the parking spots . by way of example , insolation is no longer as crucial if the motor vehicle is not driven away again until evening . if parking is only for a short time , for example in order to go to a shop and purchase a product , the degree of icing is not a crucial parameter for rating in winter , for example . weather information can also play a crucial part if prioritization is intended to take place on the basis of the criteria of insolation / degree of icing . the feature data can then be used to prioritize the parking spots as appropriate , i . e . to set up an order of rank for which parking spot is best suited or less suited to leaving the motor vehicle 10 . the parameters that are known for each parking spot can also be weighted differently in this case , this being able to be prescribed by the driver using the navigation apparatus 28 , for example . by way of example , the driver can prescribe the following weighting : insolation : very important , icing : not so important ( for example because an independent vehicle heater may be installed in the motor vehicle 10 ), vehicles subject to riot : very important . by way of example , the latter piece of information can be ascertained via a further database , for example the police , from the internet , so as to learn from the database whether damage to vehicles has been reported from time to time at the location of the parking spot . the parking spots can then be selected from the stipulations for the weighting . by way of example , the described marks for the parking spots can be displayed directly in the windshield 12 . the driver can then decide on the parking spot in which he wishes to park the motor vehicle 10 . instead of the marks , it is also possible , by way of example , to display to the driver how long he needs to schedule in the morning for deicing his vehicle in winter after leaving the motor vehicle overnight in winter . the examples show how the ascertainment of information pertaining to individual parking spots can increase comfort for a driver when using a motor vehicle . in addition , advantages arise as a result of lower fuel consumption , for example because independent vehicle heater times can be minimized or the cooling effort can be reduced . the invention has been described in detail with particular reference to preferred embodiments thereof and examples , but it will be understood that variations and modifications can be effected within the spirit and scope of the invention covered by the claims which may include the phrase “ at least one of a , b and c ” as an alternative expression that means one or more of a , b and c may be used , contrary to the holding in superguide v . directv , 69 uspq2d 1865 ( fed . cir . 2004 ).