Small Outboard Boat Motors: Choose by the Job, Not the Badge
A motor is a tool. Nobody buys a hammer by brand first. Tell us what the motor has to do all summer and the right one almost picks itself.
Small outboard boat motors are compact engines, gas or electric, that hang on a boat’s transom and turn a propeller to move and steer boats up to about 16–18 ft (4.9–5.5 m).
Colette’s motor had two jobs and failed both
Colette inherited a 15 HP from the previous owner of her 14 ft (4.3 m) fishing boat. On paper it was fine. In practice it annoyed her every weekend. When she trolled for walleye at dawn, it idled too fast and dragged her lures past the fish. When she ferried groceries and her mother-in-law out to the island cottage, the old carburetor coughed and the pull cord fought back.
She finally listed her real jobs on the back of a bait receipt. Trolling: slow, steady, quiet. Shuttling: reliable, easy start, room for passengers. Nothing about top speed. Nothing about brand loyalty.
That list pointed to a modern EFI four-stroke with a smooth low idle and electric start. The first dawn out, she slipped along the weed edge at a crawl, and her mother-in-law now reaches the island without a single cough from the engine. Or from herself.
Write the jobs down first. The motor that does your two most common jobs well is your motor.
Which small boat motor fits which job?
Most owners use their motor for one or two jobs 90 percent of the time. Buy for those.
| Main job | Suggested HP | Feature that matters most | Typical boat |
|---|---|---|---|
| Slow trolling for fish | 6–15 HP | Smooth, low idle; EFI helps | 12–14 ft (3.7–4.3 m) aluminum |
| Dock-to-island shuttles | 9.9–20 HP | Easy starting, reverse gear, electric start | 14 ft utility or jon boat |
| Crossing a big, windy lake | 20–30 HP | Power reserve for chop and load | 16 ft (4.9 m) deep-V |
| Tender runs from a moored boat | 2.3–6 HP | Low weight, built-in tank | 8–10 ft (2.4–3 m) inflatable |
| Quiet, fuel-free lakes | Electric | Battery range and silence | Canoe, small skiff, sailboat |
Our job-by-job picks
One motor per job, all in current stock. Starting prices in USD.
How do you check a boat motor fits your boat?
Once the job is clear, confirm the fit with these five checks.
- Horsepower ceiling. Read the boat’s capacity plate and stay at or under its maximum HP.
- Shaft length. Measure from the top of the transom to the bottom of the hull: about 15 in (38 cm) is short shaft, about 20 in (51 cm) is long shaft.
- Controls. Small boats usually use tiller steering. If your boat has a console, confirm the motor is offered in a remote-steer version.
- Start type. Pull start keeps weight and cost down; electric start needs a battery but spares your shoulder.
- Weight on the stern. Heavier motors lower the transom. On small, light hulls, choose the lightest motor that still does the job.
- Every gas motor we sell is a clean-running four-stroke.
- Reverse gear is standard on most motors from 4 HP up.
- Electric models need no winter fuel care at all.
Small outboard boat motors: FAQ
Can a small outboard boat motor troll slowly enough for fishing?
Most 6 to 15 HP four-strokes idle slowly enough for trolling in calm water. A drift sock or a small electric motor helps if you need to go slower still.
Is tiller steering hard on a small boat?
No. On boats up to about 16 ft (4.9 m), tiller steering is simple, responsive and keeps the rig light. Most owners are comfortable after one afternoon.
Should I buy a bigger motor than I need?
A little headroom helps with heavy loads and wind, but never exceed the capacity plate. Extra weight on a small transom can hurt handling.
Do small boat motors need a separate fuel tank?
Motors up to about 6 HP usually have a built-in tank, and many also accept an external one. Larger motors normally run from an external portable tank.
Tell us the job. We will name the motor.
Trolling, shuttling, crossing or cruising quietly: send us your list and your boat.