New(ish) Chargers, are they any good?

My wife had a 2012 Charger R/T 5.7 and replaced it with a 2018 R/T 5.7. Both will get 30+ mpg Cruising on the highway at 70-75 mph. I love them. We gave the 2012 to my daughter with 70K on the clock, still ran like new. Always ran 10w30 oil and changed it often.