[Flat Six]

Heated seats. At the end of our first date, my (now) wife said she was a little cold so I turned up the seat heaters in the Audi I drove then. I'm positive that sealed the deal and scored me a second date.

One-touch windows. Up and down. All windows.

Full-size spare tire.

Owner's manual with actual technical specifications in it.

Engine oil dipstick. Trans fluid dipstick.

Battery located where you don't have to dismantle the interior to get to it.

Ability to easily and permanently disable auto-stop feature.

Cargo hooks and hold-downs in the trunk/storage area so your groceries don't go rolling around in those plastic bags.

[Edit]: Passenger side mirror that automatically rotates down when selecting reverse so you can see curbs, kids, etc. near the passenger-side tire and bumper area.