Mercury 15 HP EFI 2025: The Modern Fifteen Continues
The 2025 Mercury 15 HP EFI FourStroke keeps its edge: a 333cc injected twin with instant starting, crisp throttle response, the multi-function tiller, F-N-R gearing, tiller or remote rigging, and Mercury’s famously low-maintenance design. A leading choice in the 15HP outboard class.
Key Features (2025)
- EFI; 333cc twin
- Multi-function tiller; F-N-R
- Tiller or remote; manual or electric
- No-spill oil change; maintenance-free valve train
Specifications
- Engine: 2-cylinder four stroke, 333cc
- Horsepower: 15 HP
- Fuel Induction: EFI
- Starting: Manual or Electric
- Gearshift: Forward-Neutral-Reverse
- Steering: Tiller or remote
- Fuel: External tank, 87 octane
- Shaft: 15″ (S) / 20″ (L)
Benefits & Applications
For 14–16 ft aluminum boats, skiffs, inflatables, and tenders. Rivals: Suzuki DF15A 2025, Yamaha F15 2025. Top tune: Mercury 20 HP EFI 2025.
Compare Model Years
See the 15 HP EFI 2024 and 15 HP EFI 2026, all Mercury Outboards, or the Mercury brand guide.
Frequently Asked Questions
What does the 2025 model cost?
$3,750, in stock.
Why the 333cc block?
Generous displacement delivers strong real-world torque and relaxed cruising.
Start options?
Manual or electric.


