After putting about 130K miles on it and reaching over 180,000 on the odometer, I sold the vehicle to my brother in Aug. 2011.
It's still running strong (April 2014), with over 200K miles and counting.
The Lumina was a reliable daily driver, and not a bad long distance trip vehicle either.
Never less than 20MPG on a tank even in the deepest cold Chicago winters; typically low 30s pure highway driving.
Stovebolt reliable and cheap to fix wear-out parts.
Oil usage excellent at about 6K miles per quart.
Tough as a tank.
Was rear-ended once by a Mustang.
Major frontend damage to the Mustang.
Replaced the exhaust, bumper cover and shocks on the Lumina.
Best Chevy I ever owned.
Smooth ride. Logical controls.
Seating for 6 in a pinch.
Great highway MPG, 30-32.
(about 2000 RPMs at 70 MPH).
Excellent outward visibility, reliability and durability.
No timing belt to change @ $1K per job - nothing wrong with simple, durable, pushrod engines!
3.1 V-6 a gem.
These points are kind of moot since the vehicle is out of production, but....the one thing I wish it had was 4-wheel disc brakes.
Braking at highways speeds over 65MPH or downhill in the mountains was always a little scary.
The rear drums did little real braking work, and the too-small front discs did about 80% of the braking work.
Lots of brake fade.
Never liked the double-push E-brake system.
The battery was more than half covered by the washer wiper reservoir - dumb design.