Dickie McGranaghan had left the specially-made seats outside his Letterkenny home when he went to collect two wheelchair-bound pensioners.
But when he returned to refit the seats back into his taxi, they were gone.
The theft of the seats, which were specially made at a cost of almost €1,000, now means Dickie won’t be able to collect passengers in his car.
Dickie, from Ballymacool Terrace, explained “I take the seats out to allow me to collect wheelchair-bound passengers.
“They were specially made and fit onto rollers in my taxi. They cost me more than £750and had to be made in Northern Ireland.
“Christmas is the busiest time of year but now I can’t collect bigger parties in the eight seater because I don’t have these seats,” explained Dickie.
Dickie says whoever stole the seats on Tuesday night last knew exactly what they were doing.
“It would have taken two people to lift them and they initially moved them a couple of hundred yards before someone must have collected them in a van,” he revealed.
But the fed-up taxi-driver said the expensive seats are useless to anybody else.
“It’s sad because nobody will be able to use them as they have been especially made to fit my taxi.
“I’m not sure if they were just taken by someone passing in a van or if they planned it. But the problem is that they are useless for anybody else because they only fit my taxi.
“The sad thing is that they have probably just dumped them in a field where they’ll rot away,” he said.
The theft has been reported to Letterkenny Gardai who are investigating the matter.