The star of The Great British Bake Off was awarded a certificate for the mature driver assessment carried out by road safety charity IAM RoadSmart.
She was tested in areas including use of the clutch, gears and brakes, as well as hazard perception, maneuvering, dealing with traffic and concentration.
Berry was presented with the certificate by IAM RoadSmart chief executive Sarah Sillars at the Kop Hill Climb in Buckinghamshire on Saturday.
The charity event, which was expected to draw in tens of thousands of visitors, featured a line-up of classic cars and motorbikes to celebrate motorsport between the years of 1910 and 1925.
Also in attendance was racing legend Paddy Hopkirk, who will be officially launching the second day of The RAC Rally of the Tests this year.
Hopkirk, winner of the 1964 Monte Carlo Rally, among a clutch other events, said the mature driver test helps older drivers to stay confident on the road.
“It was great to be a part of Kop Hill Climb, meeting so many new and not-so-new friends!” he said.
“I always enjoy talking about the work of IAM RoadSmart and especially that driving doesn’t have to stop when you reach a certain age.
“I have taken the mature driver assessment myself and the advanced driver course twice. So it shows whatever your level of driving experience, everyone can benefit from a helping hand.”
Berry, 81, has been a member of IAM RoadSmart since the 1950s, when she took an early version of the organisation’s advanced driver course.
Research carried out by Swansea University recently found that younger drivers are three to four times more likely to crash than men or women in their 70s or over.
Though it is commonly thought that health problems and slower reaction times hamper the ability of elderly motorists behind the wheel, the study found that they counteract these factors by showing more care in their vehicle.