Both the Larson 258 LXi 2010 and the Larson LXi 258 I/O 2012 are modified-V designs, the first built in fibreglass and the second in composite, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department - Larson 258 LXi 2010 at 25,5 ft versus Larson LXi 258 I/O 2012 at 25,5 ft. At 4 750 lbs and 4 750 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 425 hp, the Larson 258 LXi 2010 has a 125-hp advantage over the Larson LXi 258 I/O 2012's 300-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 56 gal and 56 gal - so range won't be a tiebreaker here.
Both boats are rated for 12 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: Performance buyers should lean toward the Larson 258 LXi 2010 and its 425-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Larson LXi 258 I/O 2012 with its 300-hp rating is the more economical daily driver.