The Beneteau Evasion 28 1975 vs Beneteau Idylle 10.50 1985 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 Idylle 10.50 1985 measures 34,5 feet overall (1985), giving it roughly 7,4 additional feet of deck space compared to the Beneteau Evasion 28 1975 at 27,1 feet (1975). Weight tells a clearer story for trailering families: the Beneteau Idylle 10.50 1985 tips the scales at 10 141 lbs - 661 lbs less than the Beneteau Evasion 28 1975 at 9 480 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.
Both boats share a closely matched power ceiling - 30 hp for the Beneteau Evasion 28 1975 and 28 hp for the Beneteau Idylle 10.50 1985. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads - 24 gal and 24 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Beneteau Idylle 10.50 1985 is rated for 10 passengers, while the Beneteau Evasion 28 1975 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Idylle 10.50 1985 could be the deciding factor.
Both boats sit in a similar displacement bracket - 9 480 lbs for the Beneteau Evasion 28 1975 and 10 141 lbs for the Beneteau Idylle 10.50 1985. Comparable displacement means broadly similar seakeeping behaviour and load capacity, though hull form and ballast ratio will still produce noticeably different sailing characteristics.
Both boats draw a similar depth - 4,1 ft and 4,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Beneteau Evasion 28 1975 uses Sloop rigging.
Hull speed is rated at 7,1 knots for the Beneteau Idylle 10.50 1985 and 6,2 knots for the Beneteau Evasion 28 1975.
Bottom line: The Beneteau Idylle 10.50 1985 at 34,5 ft offers more living space, greater range, and a more substantial offshore capability. The Beneteau Evasion 28 1975 at 27,1 ft is the easier, lower-cost option - simpler to crew and a strong choice for coastal and day sailing.