How to get speed boost in Mario Kart World

Getting a speed boost in Mario Kart World right at the starting line can be the difference between leading the pack and struggling from the back. This mechanic, known as a Rocket Start, is all about pressing the right button at the right moment.

If you’ve played previous Mario games like Mario Kart 8 Deluxe, this won’t be new, but the timing still takes practice. Here is how to perfectly time a speed boost in Mario Kart World.

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How to trigger speed boost in Mario Kart World

Get set go (Image via Nintendo)

What is a Rocket Start?

A Rocket Start gives you a speed boost in Mario Kart World as soon as the race begins. In Mario Kart World, you can trigger this by watching the countdown at the start of each race. When the number 2 appears on the screen — not before, not after — you need to press and hold the A button. If done correctly, you’ll launch forward with a clean boost.

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Timing is everything

You must press and hold A exactly when the number 2 is fully visible —that’s your boost window. If you press too early, you’ll stall. If you press too late, you’ll miss the boost. There’s a tiny but clear window between the "2" appearing and fading away. Hitting A right when the "2" settles into place gives the strongest boost possible.

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Use Lakitu’s arm as a guide

If watching the numbers feels too inconsistent, pay attention to Lakitu, the character holding the countdown flag. When his arm reaches the bottom just as the "2" shows up, that’s the best moment to press A. It’s a reliable cue if you’re struggling with the countdown visuals.

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Don’t press A too soon

If you hold A before the number 2 appears, your kart will stall at the line. It’s not just missing the boost — it’ll cost you seconds as everyone else speeds ahead. So wait until the right moment, even if you’re tempted to hit the gas early.

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Keep practicing

Every race is an opportunity to practice timing. Even if you don’t get the perfect boost, holding A when the 2 starts to fade still gives you a small edge. The more you race, the more muscle memory you’ll build for hitting that exact moment.

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Check out: Mario Kart World patch notes: Everything improved with Version 1.1.0 (June 05, 2025)