The Riviera 645 SUV 2021 vs Riviera Yachts 61 Enclosed Flybridge 2011 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Size is the most obvious dividing line here. The Riviera 645 SUV 2021 measures 69,8 feet overall (2021), giving it roughly 8,8 additional feet of deck space compared to the Riviera Yachts 61 Enclosed Flybridge 2011 at 61,0 feet (2011). Weight tells a clearer story for trailering families: the Riviera 645 SUV 2021 tips the scales at 88 119 lbs — 87 447 lbs more than the Riviera Yachts 61 Enclosed Flybridge 2011 at 672 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 1 300 hp, the Riviera 645 SUV 2021 has a 285-hp advantage over the Riviera Yachts 61 Enclosed Flybridge 2011's 1 015-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Riviera Yachts 61 Enclosed Flybridge 2011 carries 1 731 gallons versus 1 717 gallons in the Riviera 645 SUV 2021. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Riviera 645 SUV 2021 is rated for 21 passengers, while the Riviera Yachts 61 Enclosed Flybridge 2011 caps at 18. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Riviera 645 SUV 2021 could be the deciding factor.