Airstream Interstate Grand Tour vs. Lounge
The Airstream Interstate Grand Tour EXT and Lounge EXT are two of the most popular Class B Touring Coaches offered by Airstream. With over 50 best-in-class standard features, it’s no surprise that the Interstate line has been America’s best-selling Class B diesel motorhome for six consecutive years.
Though they look identical from the outside, there are a few key differences that set the Grand Tour and Lounge apart. Let’s break down what makes each model unique.
Mercedes-Benz Sprinter Chassis
Both the Grand Tour EXT and Lounge EXT are built on the Mercedes-Benz VS30 3500 chassis and powered by a 3.0L V6 Turbo Diesel engine. Each has 188 horsepower, 325 lb-ft of torque, and a 7-speed automatic transmission. They both include a Tow Package and are capable of towing up to 5,000 pounds.
Both models come in three exterior colors—Arctic White, Iridium Silver, and Jet Black—and are available in 4×4 configurations.
Floor Plan Differences
The most significant difference lies in the layout.
The Grand Tour seats up to 7 passengers
The Lounge seats up to 9 (or 7 with 4×4)
Each includes a rear power sofa that converts into a bed for two, along with a fully equipped wet bath featuring a toilet, sink, shower, and built-in toiletry dispensers.
The Grand Tour features a workstation behind the driver’s seat—ideal for working remotely. The Lounge, by contrast, includes two additional captain’s chairs behind the front seats for extra seating.
Galley & Kitchen Space
If you plan on doing more cooking, the Grand Tour may be the better option. It has the largest galley in Airstream’s Class B lineup, with a 5.0 cu. ft. refrigerator and extra counter space. The Lounge includes a smaller 3.1 cu. ft. fridge but trades kitchen room for more seating.
Interior Décor Options
Both models come with four interior décor choices:
Modern Greige
Lux White
Formal Black
Refined Brown
The special-edition Tommy Bahama décor is also available, offering wood blinds, a built-in bar, and island-inspired styling.
Tank Capacities
LPG Tank: Grand Tour – 14.6 gal. | Lounge – 9.8 gal.
Fresh Water: Grand Tour – 27 gal. | Lounge – 26 gal.
Black Tank: Grand Tour – 13 gal. | Lounge – 11 gal.
Gray Water: Lounge – 27 gal. | Grand Tour – 21 gal.
Fuel Tank (Both): 24.5 gal. (~400-mile range)
Which One is Right for You?
While the Grand Tour and Lounge share many features, the layout, galley size, and seating options may influence which is better suited for your lifestyle.
Need help deciding? Call us at 1-800-265-9019, or view our current Interstate inventory online.
