Likely a bad tire or at least that's the first thing to check
Front wheel drive. The last rear wheel drive Impala made was the Impala SS in 1996.
2000
Have the wheel bearings checked, as well as the alignment.
2000-newer models are
On the highway the 3400 V6 will get at least 30 mpg, and the 3800 V6 will get 28mpg. Better depending on how you drive and how much weight you are carrying. The 2000-up Impala gets excellent mileage for a large car.
30 miles..
Your timing could be off.
I had a problem with stalling with a 2000 Impala, and it was the oxygen sensor.
Impala HQ .com
2000 chevy impala sterio wireing color codes
where is the ac vacuum line on a 2000 impala ls> Yes I need to know about a LS
What are the torque specs for 2000 Chevy Impala 3.8 Litre ?