The 1999 Monte Carlo was available as an LS or the more race-car-minded Z34. The base engine on the LS remained a 3.1-liter, 160-horsepower V6, and the Z34 kept its powerful yet fuel-efficient 3.8-liter, 200-horsepower V6. Mileage for the LS is 20/29 city/highway, while owners of the Z34 can expect 19/30.

Drivers love the comfort of the vehicle, yet complain about the quality of the brakes and the time needed to go from 0 to 60, even in the powerful Z34. Tuning these cars for more power can be difficult, as the engine compartment is relatively small and tightly-packed.