The Beneteau First 310 1990 vs Beneteau Monte Carlo 5 2020 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 Beneteau Monte Carlo 5 2020 measures 49,6 feet overall (2020), giving it roughly 18,5 additional feet of deck space compared to the Beneteau First 310 1990 at 31,1 feet (1990). Weight tells a clearer story for trailering families: the Beneteau Monte Carlo 5 2020 tips the scales at 31 381 lbs — 23 224 lbs less than the Beneteau First 310 1990 at 8 157 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 435 hp, the Beneteau Monte Carlo 5 2020 has a 417-hp advantage over the Beneteau First 310 1990's 18-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Beneteau Monte Carlo 5 2020 carries 344 gallons versus 17 gallons in the Beneteau First 310 1990. 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 Beneteau Monte Carlo 5 2020 is rated for 15 passengers, while the Beneteau First 310 1990 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Monte Carlo 5 2020 could be the deciding factor.

Displacement is where these two sailboats genuinely part ways. The Beneteau Monte Carlo 5 2020 displaces 31 381 lbs — a 23 224-lb difference over the Beneteau First 310 1990 at 8 157 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.

The Beneteau First 310 1990 uses Sloop rigging. For auxiliary power the Beneteau Monte Carlo 5 2020 carries a 435-hp engine against 18 hp on the Beneteau First 310 1990. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.

For extended cruising, water capacity matters: the Beneteau Monte Carlo 5 2020 carries 158 gallons versus 45 gallons on the Beneteau First 310 1990 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.