2025 Grand Design Momentum G-Class 28G vs 2025 Keystone Impact 332

Detailed Comparison

The 2025 Grand Design Momentum G-Class 28G goes up against the 2025 Keystone Impact 332 in this detailed comparison. Each has distinct advantages worth considering.

Dimensionally, you're looking at 43.0 ft for the Grand Design Momentum G-Class 28G and 36.5 ft for the Keystone Impact 332. The Keystone Impact 332 carries an extra 1,800 lbs, which affects tow vehicle requirements and fuel economy.

The Grand Design Momentum G-Class 28G sleeps 10 while the Keystone Impact 332 accommodates 6. Slide-outs play a role in livability: the Grand Design Momentum G-Class 28G has 0 and the Keystone Impact 332 has 3.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Impact 332 at 81 gallons versus 56 gallons. Solar-wise, you get 150W on the Grand Design Momentum G-Class 28G and 350W on the Keystone Impact 332. Battery banks are 150 Ah and 150 Ah.

At $70,000 MSRP for the Grand Design Momentum G-Class 28G and $72,000 for the Keystone Impact 332, the Grand Design Momentum G-Class 28G saves you $2,000. With only a 3% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.