TOMTOM will stop updating the maps on at least 66 different sat-nav models, sparking fury among customers.
The company issued a statement warning sat-nav owners that their maps would "become out-of-date", adding that navigation will be "less accurate".
One angry Twitter user wrote: "So 'lifetime' doesn't mean 'lifetime'? Nothing like ripping off the customer."
He added: "Won't be getting another TomTom sat-nav. Will be advising all friends and family to steer clear as well."
The company has published a detailed list of all the models that will soon miss out on vital software updates, which you can find here.
The page, which is titled "obsolete products", even tries to push disappointed customers onto newer models: "This may be the perfect opportunity to discover what our new range of navigation products has to offer you."
People might have to start reading maps and road signs again.