engine was the Navistar-produced 7.3 L Powerstroke V8; during 2003 production, a Navistar-produced 6.0 L diesel V8 was introduced, again using the Powerstroke name. All four engines were paired with an automatic transmission. The 4-speed 4R100 automatic was fitted to the 5.4 L, 6.8 L, and 7.3 L engines, with a 5-speed 5R110W automatic fitted to the 6.0 L engine. Though using the -ton chassis of the F-250, the Excursion was rated with a GVWR of when equipped with gasoline engines and with equipped with diesel engines. As its GVWR was above , the Excursion was exempt from EPA fuel economy ratings; reviewers cited fuel economy in the range of 12-15 Lmpg with the V10 gasoline engine. While its GVWR exempted it from emissions standards applied to light-duty vehicles, Ford designed the powertrains of the Excursion to meet low-emissions vehicle (LEV) status. Body design While the smaller Ford Expedition shared design elements with the popular Ford Explorer, the Excursion adopted a high degree of commonality from its F-250 counterpart. With the exception of its egg-crate grille (styled similar to the Expedition and the third-generation Explorer), the Excursion shares its front bodywork forward of the B-pillars with its pickup-truck counterpart; the rear doors are specific to the model line (more curved rear edge than crew cab F-Series doors). Styled similar to the 1980-1996 Bronco (with flush-mounted glass), the rear wagon body of the Excursion is fitted with a third-row seat. As with the Bronco, the spare tire was vertically-mounted in the cargo area. In place of a conventional liftgate, the rear cargo door was configured with a 3-way layout, pairing the upper lifting window (with rear wiper) with two lower dutch doors (a design similar to the 1992-2005 Chevrolet Astro). Larger taillamps were sourced from the Ford E-Series van. During its production, the Excursion saw few major changes to its interior or exterior. For 2002, the instrument panel was updated, receiving a digital odometer and a transmission temperature gauge. For 2005, the egg-crate grille was replaced by the three-bar grille used on Super Duty trucks. Coinciding with its design commonality with the Ford Super Duty crew cab, the Excursion was a mass-produced SUVs with four full-length passenger doors (along with the Ford Expedition MAX and Lincoln Navigator L, the Chevrolet Suburban and its GMC and Cadillac counterparts, the International Travelall, and the Jeep Wagoneer L and Grand Wagoneer L). Trim The