Tohatsu MFS15 EFI Outboard Motor 2025 – 15HP Four Stroke

Tohatsu MFS15 EFI 2025: Injection Without the Battery

The 2025 Tohatsu MFS15 EFI continues to offer what almost nothing else in the class does: full electronic fuel injection that needs no battery. The 333cc (20.3 cu in) twin produces 15 HP (11.0 kW), the digital ECU delivers immediate starting in all conditions with no choke, and a recoil starter is standard on every model. Fuel economy improves markedly over carbureted designs — Tohatsu quotes up to 50% farther on less fuel at wide open throttle — while the tool-free fuel/water separator with floating indicator ring makes service genuinely simple. Power Tilt is available on many configurations. A technically impressive package in the 15HP outboard class.

Key Features (2025)

• Battery-less EFI; recoil start standard
• 333cc twin; no choke required
• Tool-free fuel/water separator
• F-N-R gearing; Power Tilt available

Specifications

• Engine: 2-cylinder four stroke, 333cc (20.3 cu in)
• Bore x Stroke: 61 x 57 mm (2.4 x 2.24 in)
• Horsepower: 15 HP (11.0 kW)
• Fuel Induction: Battery-less EFI
• Starting: Manual (recoil) or Electric
• Gearshift: Forward-Neutral-Reverse
• Steering: Tiller or remote
• Fuel: Separate tank, 87 octane unleaded
• Shaft: 15″ (S) / 20″ (L)

Benefits & Applications

For 14–16 ft aluminum boats, skiffs, inflatables, pontoons, and tenders. Rivals: Suzuki DF15A 2025, Yamaha F15 2025. Top tune: Tohatsu MFS20 EFI 2025.

Compare Model Years

See the MFS15 EFI 2024 and MFS15 EFI 2026, all Tohatsu Outboards, or the Tohatsu brand guide.

Frequently Asked Questions

What does the 2025 MFS15 EFI cost?

$3,400, in stock and ready to ship.

What is the fuel/water separator for?

It catches water in the fuel before it reaches the engine, and the floating indicator ring lets you see contamination at a glance — no tools needed to drain it.

Is Power Tilt available?

Yes, on many configurations.