Not a Good Time to Buy Large SUVs Right Now

GM is attempting to add either an extra day of manufacturing or a new shop to augment the current facilities producing the Chevrolet Equinox and the GMC Terrain. Supplies are currently at three weeks or less for both models for most dealers.

This is bad news if you're in the market for one of these vehicles. When there's high demand and low supply, negotiating a good deal becomes nearly impossible.

The production increases would likely add 40,000 more units on an annual basis to improve dealer stock levels.

Ford is currently experiencing similar growth in demand for the Expedition and Lincoln Navigator models, with sales jumping by 50% or more in the last month, according to industry figures. The Expedition's inventory had declined to a 31-day supply, and the Navigator's to a 24-day supply. When supplies are below 60 days, don't expect to get a great deal.

The increase in demand may make it worthwhile to wait before considering purchasing a full-size SUV. Dealers will likely be able to increase prices or sell vehicles at or near MSRP until their supply is replenished by automakers later this year.