The 6000 became the best selling Pontiac soon after its debut. 122,000 of these cars were sold by 1984. The 6000 was sold in 2 door coupe, 4 door sedan, and 4 door station wagon body types.
The 6000 STE was introduced in 1983 to compete with the sport luxury cars being imported from Europe. This car could keep up with the BMW 3 series, along with the Mercedes 190E.
The standard engine on the base 6000 was the I4 Iron Duke. The STE got a V6 High Output engine. The STE also got many other sporty upgrades such as a stiffer suspension and better wheels and tires.
One engine that was not very popular but was sold in some markets was the diesel. As with most diesel engine cars, the 6000 Diesel was more likely to last longer than the gas version, so you should expect to see a disproportionate number of them left on the used car market today.
You can still find the Pontiac 6000 in decent shape on the used car market, if you happen to be looking to buy a Pontiac 6000. The 6000 STE and diesel versions are decent buys, especially considering the low price you should expect to be paying. Look on eBay to see if there are better deals on there in your general area.