Took my 2013 Elantra in for a transmission range sensor warranty replacement, (google it, common problem).
Opted for a fall Maintenance package while they had the car since it was due.
They called me next day and told me I needed a Transmission flush, ($300), complete brake job, (claimed the brakes were SEIZED), ($800), and an HVAC service, (didn't ask). I am an Industrial Mechanic and do most of my own work, I had just put on my winter tires and checked my brakes and undercarriage, the brakes are fine, (NOT seized), with life left on the disks! The tranny is a sealed unit these days and I couldn't argue the necessity of the flush, so I let them do that although I doubt it was necessary, I am over 60 years old and have never before needed a transmission flush and I have kept cars on the road for up to 25 years! HVAC just needs a new cabin air filter, $20 at most parts stores.
They also missed 3 burnt exterior bulbs even thought the checklist I was given said all lights were good, I wonder what else they missed...