The Jefferson Yachts 42 Sundeck Motor Yacht 1990 vs Jefferson Yachts 46 Marlago Sundeck 2000 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.
The Jefferson Yachts 42 Sundeck Motor Yacht 1990 carries a rated maximum of 220 hp. Engine data for the Jefferson Yachts 46 Marlago Sundeck 2000 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Jefferson Yachts 46 Marlago Sundeck 2000 carries 42 gallons versus 35 gallons in the Jefferson Yachts 42 Sundeck Motor Yacht 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 Jefferson Yachts 46 Marlago Sundeck 2000 is rated for 14 passengers, while the Jefferson Yachts 42 Sundeck Motor Yacht 1990 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Jefferson Yachts 46 Marlago Sundeck 2000 could be the deciding factor.
Bottom line: Choose the Jefferson Yachts 46 Marlago Sundeck 2000 if your priority is putting more people on the water — it handles 14 passengers and at 46,0 ft it has the deck room to back that rating up comfortably. The Jefferson Yachts 42 Sundeck Motor Yacht 1990 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 12 that costs less to run day-to-day.