Buyer Research

2021 Yamaha WaveRunner EX — Should You Buy One?

Typical asking price: $6,500–$9,000. This is one of the more reliable vehicles in its class — here's what to watch for anyway.

Kestrel Take

The cheapest way into a reliable, full-size-feeling ski — a lightweight rec-lite runabout with Yamaha's naturally aspirated 1049cc TR-1 engine, one of the most dependable marine engines made. No supercharger to service. The whole inspection is hours, flushing, and impact damage.

Known Issues for the 2021 Yamaha WaveRunner EX

Ranked by wallet impact. These are documented, recurring problems — not freak accidents.

Salt-use corrosion from poor flushingMedium

A saltwater ski that was never flushed corrodes internally. Ask directly about fresh vs salt use and flushing habits.

Repair cost range: $300-$2,000

Impact and beaching damage to the hull/pumpMedium

Check the hull bottom and jet pump for gouges, and the impeller for sand/gravel damage from shallow-water riding.

Repair cost range: $200-$1,200

Wear ring and impeller wearMedium

The wear ring degrades with hours and debris; a worn one loses thrust.

Repair cost range: $150-$500

Stale fuel and battery from storageLow

Off-season sitting gums fuel and kills batteries.

Repair cost range: $50-$300

Walk-Away Red Flags

✗Salt use with no flushing history
✗Hull or pump impact damage
✗Worn wear ring — weak thrust
✗High hours with no service

Good Signs

✓Freshwater use or diligent salt flushing
✓Clean hull and pump
✓Low hours with records — no supercharger to worry about

Found a specific Yamaha WaveRunner EX?

This page covers what goes wrong on the 2021 Yamaha WaveRunner EX in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.

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Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.

Other Yamaha WaveRunner EX years

2018 Yamaha WaveRunner EX

$7,000–$11,000