First, a 6 year-old car with only 47K on it means that there's a lot of city driving - ie. Lots of turns per mile. Most tire wear occurs in the cornering mode, while straight ahead driving is practically free.
Second, if the tires are OE (Original Equipment) - that is, the identical tire that came on the vehicle from the factory, even if they were bought at a dealership - those tires are likely NOT to wear well, because they were designed to the vehicle manufacturer's specs which includes tight rolling resistance requirements and they get that by sacrificing wear and/or traction, especially wet traction.
Third, you didn't tell us what the UTQG treadwear rating was, but what is needed is the highest treadwear rating - the first number in the rating. Read about UTQG ratings here:
https://www.tirerack.com/tires/tiret....jsp?techid=48