Hello
sorry, look like - something work incorrectly - in joomla router system.
Maybe there some error at time Joomla - update. Please Try update Joomla to next version - maybe this error will fixed. (Before any update - please do backup)
Please try check this (in last version of
Joomla Vehicles) on some other site - with fresh Joomla Install.
Now we on yours site - turn on - old router for Vehicles show. Please check how this work now
Regards
OrdaSoft team