Mercury FourStroke 20 HP EFI Outboard Motor 2024

Mercury 20 HP EFI 2024: The Injected Twenty That Does It All

The 2024 Mercury 20 HP EFI FourStroke is the strongest tune of Mercury’s 333cc injected twin. EFI delivers instant power from the first crank — surefire starting in all weather, smooth efficient acceleration — while the multi-function tiller, F-N-R gearing, and a menu of manual/electric start, tiller/remote, and power trim options rig it for any boat. No-spill oil changes and the maintenance-free valve train keep ownership effortless. A do-everything leader in the 20HP outboard class.

Key Features (2024)

• EFI — instant power, all-weather starts
• 333cc twin — top 20HP tune
• Multi-function tiller; F-N-R; power trim options
• No-spill oil change; maintenance-free valve train

Specifications

• Engine: 2-cylinder four stroke, 333cc
• Horsepower: 20 HP
• Fuel Induction: EFI
• Starting: Manual or Electric
• Gearshift: Forward-Neutral-Reverse
• Steering: Tiller or remote; power trim available
• Fuel: External tank, 87 octane
• Shaft: 15″ (S) / 20″ (L)

Benefits & Applications

Planing power with injected reliability for 14–17 ft aluminum boats, skiffs, jons, RIBs, and workboats. Rivals: Suzuki DF20A 2024, Honda BF20 2024. Big Mercury muscle: Mercury 25 HP EFI 2024.

Compare Model Years

See the 20 HP EFI 2025 and 20 HP EFI 2026, all Mercury Outboards, or the Mercury brand guide.

Frequently Asked Questions

Is power trim available?

Yes — select configurations offer power trim alongside manual options.

15 or 20?

Same 333cc block — the 20 is the maximum tune for buyers who want full planing margin.

Best boats?

14–17 ft aluminum boats, skiffs, jons, RIBs, and workboats.