I'm looking to buy my first outboard motor for a used 16-foot aluminum fishing boat I just picked up. The boat's max rating is for a 40 HP motor, but I'm torn between getting a brand new four-stroke for reliability and fuel efficiency or a used two-stroke for lower upfront cost and simpler maintenance. I'll mostly be using it on freshwater lakes for trolling and cruising. What are the real-world pros and cons of each type for a casual boater, and are there any specific brands or models in that horsepower range known for being particularly durable or easy to work on?
Two paths here: a brand-new four-stroke 40HP is usually the easiest, most reliable choice with better fuel economy and a warranty. A used two-stroke 40HP can be cheaper upfront and lighter, but it’ll likely need more maintenance and may run louder or burn more fuel. Since you’re trolling and cruising on freshwater, many casual boaters lean toward the four-stroke for consistency.
From my experience, if you want simple weekends on the water, go four-stroke new. If you’re comfortable with older tech and want to save upfront, a low-hour two-stroke can work, but you’ll want to budget for tune-ups, seals, and potential carb work. Have a trusted shop check compression and inspect the gearcase if you’re buying used.
Solid new 40HP four-strokes: Honda BF40, Yamaha F40, Suzuki DF40A, or Tohatsu 40 (they’re common and well-supported). For a used two-stroke in that range, you’ll see older Johnson/Evinrude or Mercury/Mercruiser options—prioritize low hours, recent water pump and compression, and service history.
Quick checklist: (1) ensure your transom can handle the load and has the right bolt pattern; (2) inspect gearcase oil and look for water contamination; (3) check the propeller size and pitch; (4) verify the engine starts reliably and idles smoothly; (5) ask about the cooling system, saltwater vs freshwater; (6) plan for a familiarization test run with a reputable mechanic if possible.
If you want, I can sketch a rough cost comparison for your area—fuel prices, expected hours on the water, maintenance freq. Share your state or city, and whether you’ll buy new or used, and I’ll lay out a simple break-even view.