Originally Posted by Mr Flibble
Yet another 'Which one is best' type question.
All 115hp 4's
Based on reliability, economy, cost of servicing.
Have nothing else to compare it with, and agree with the first few replies to your question, just thought I'd give my experience of our particular engine:-
Mercury 115 EFi, MY2007, 70 hours use, 181kg, 5 year warranty.
Economy: on a ~25knot cruise in fairly benign Solent conditions the Smartcraft gauge hovers around 18-20l/hour. That seems a little optimistic, equating to ~0.8l/nm - from rough calcs of gps distances etc it's more like 1l/nm.
Reliability: so far it hasn't missed a beat, starting on the 1st turn even after several weeks standing still. Nothing has blown up/fallen off so far.
Performance: no idea how it compares with anything else, but it pushes our little 6.2m along well enough to give the crew big grins - 41knots so far with 2 up and 80l fuel in mild chop. It seems to pull well to get on the plane, have no idea how to assess its 'hole shot' abilities though. It feels very smooth going through the rev range.
Noise: very quiet at tickover/low revs, you have to shout at each other at wot. But the wind plays a part in that.
Servicing: cheapest quote so far is £135, tending to average out at £150ish.
Any issues? The centrally-mounted throttle doesn't give a great feel for the neutral position; you have to be careful not to put it in reverse accidentally (or that may just be ham-fistedness?).
I suspect the above experiences are pretty familiar to most owners of whatever brand, especially for a relatively new engine like ours.
Would I buy another Mercury 4-stroke? Yes on current experience.
Would I consider any other brand? Yes, including modern 2-strokes.
Not sure if that waffle is of any help whatsoever???