The Monterey 258 SS 2019 vs Monterey 340SY 2010 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 Monterey 340SY 2010 measures 35,3 feet overall (2010), giving it roughly 10,2 additional feet of deck space compared to the Monterey 258 SS 2019 at 25,1 feet (2019). Weight tells a clearer story for trailering families: the Monterey 258 SS 2019 tips the scales at 5 100 lbs — 4 958 lbs more than the Monterey 340SY 2010 at 142 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 430 hp, the Monterey 258 SS 2019 has a 55-hp advantage over the Monterey 340SY 2010's 375-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Monterey 258 SS 2019 carries 65 gallons versus 21 gallons in the Monterey 340SY 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Monterey 258 SS 2019 is rated for up to 7 people. Passenger data for the Monterey 340SY 2010 wasn't available.