When two boats share the same hull type — in this case both the Crestliner 1657 SS 2013 and the Crestliner Ambush 18 2011 are modified vee designs with aluminum construction — 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 — Crestliner 1657 SS 2013 at 16,0 ft versus Crestliner Ambush 18 2011 at 18,0 ft. Weight tells a clearer story for trailering families: the Crestliner Ambush 18 2011 tips the scales at 1 009 lbs — 1 000 lbs less than the Crestliner 1657 SS 2013 at 9 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 90 hp, the Crestliner Ambush 18 2011 has a 40-hp advantage over the Crestliner 1657 SS 2013's 50-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Crestliner Ambush 18 2011 carries 22 gallons versus 1 gallons in the Crestliner 1657 SS 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 4 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.

At this size, power-to-weight ratio matters more than outright horsepower. The Crestliner 1657 SS 2013 comes in at 0 lbs per hp versus 11 lbs per hp for the Crestliner Ambush 18 2011. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.