Rouleau 
2017 Toyota Corolla Sedan LE 4dr Sedan (1.8L 4cyl CVT)
CVT Transmisssion is a looser in this vehicle
 750 miles on a new 2018 LE Corolla.  It's OK as a grocery getter for your mother-in-law.  However, acceleration and highway driving in any hills or mountains is a loser.   A lot of engine noise with any acceleration.  RPM = Noise in this car.  Very slow getting going from a stop, for the first 100 feet, then the engine spools up, making a lot of noise, but not a lot of acceleration.  Driving at 60 with cruise control on, the car will go faster down hill to about 65, then the CVT "downshifts" the car and the engine revs to 4,500 rpm to slow it down; however it really doesn't do much but make a lot of noise.  The driver gives over control of the car to the lousy transmission.  There is only D, S and B.  The owner's manual said nothing about these positions.  Moving to S, is adds RPM and some slowing.  moving to B makes a lot more RPM and more slowing.  There is no way to have any other control over this transmission than just those positions.   With a real 6 speed manual or automatic transmission, this would be a much better economy car.  I've owned five cars with less HP and better acceleration due to 5 speed manual transmissions that did not slip and slide like the CT.  The CVT makes it a DUD.  One additional thing that I found to be troubling was rear window visibility.  With fixed headrests on both sides of the vehicle, and an adjustable one in the center, it restricted visibility when making a quick lane change.  The headrests are only needed with rear passengers.  I ended up lowering the back rest on the passenger side to remove the visual obstruction of the right and center headrests, meaning we drove around with the trunk open to the interior.  A poor design done to save money.