The 2016–2017 Axis A20 is a popular compact wake and surf boat for riders who want a strong wave, simple controls, and better value compared with more luxury-focused tow boats. Many owners like the A20 because it is easy to trailer, fits smaller lakes well, and can still produce a fun wakesurf wave when properly weighted.

That said, like many used wake boats, the 2016–2017 Axis A20 has a few issues buyers and owners should know about. Most complaints are not about the hull being bad. Instead, they usually involve ballast pumps, Surf Gate faults, speed control behavior, wave setup, electrical details, and normal deck or platform wear.

If you are shopping for a used Axis A20 or upgrading one you already own, this guide breaks down the most common problems to check before you buy, repair, or customize the boat.

1. Ballast Pump and Ballast Bag Issues

One of the most common areas owners discuss on the 2016–2017 Axis A20 is the ballast system. Because the A20 is often used for wakesurfing, many owners run extra ballast in the rear lockers, center tank, bow, or plug-and-play bags. When everything works correctly, the boat can produce a strong surf wave. But when a pump, hose, vent, or bag has an issue, the wave can quickly become uneven or weak.

Common ballast-related complaints include:

• Fill pumps or drain pumps not working correctly
• Rear ballast bags not filling evenly
• Hard tanks not draining completely
• Air trapped in ballast bags
• Slow fill or drain times
• Loose fittings, kinked hoses, or leaking connections

For a used Axis A20, it is important to test every ballast zone during a lake trial. Do not only check the switches at the dock. Fill and drain the tanks and bags on the water, then confirm that the boat lists evenly and that all pumps sound normal.

2. Surf Gate Faults and Actuator Problems

The Surf Gate system is one of the biggest reasons people buy an Axis A20. It allows the boat to shape a surf wave from side to side without heavily listing the boat like older surf setups. However, owners have reported Surf Gate warnings, locked gate messages, actuator problems, wiring issues, and relay module concerns.

Possible Surf Gate symptoms include:

• Surf Gate locked warning on the display
• One gate not opening or closing properly
• Intermittent Surf Gate errors
• One surf side working better than the other
• Actuator movement that sounds weak, slow, or uneven
• Gate calibration or relay-related problems

During inspection, test both regular and goofy surf settings. Watch the gates move from the swim platform area and confirm that both sides deploy and retract smoothly. A small Surf Gate issue can make a big difference in wave shape, especially if you are buying the boat mainly for wakesurfing.

3. Speed Control Can Feel Inconsistent

Another issue some A20 owners mention is cruise or speed control behavior. For wakeboarding and wakesurfing, consistent speed is extremely important. Even a small speed change can affect wave push, pocket length, and rider feel.

Some users report that the boat may have trouble locking onto the set speed, especially when heavily weighted. This can be more noticeable when the boat is loaded with ballast, passengers, gear, and wedge settings.

Before buying a used 2016–2017 Axis A20, test speed control under real surf conditions. A short empty-boat test does not tell the whole story. Try the boat with ballast filled and riders onboard if possible.

4. Surf Wave Setup Takes Some Patience

The Axis A20 can produce a fun surf wave, but it is not always a perfect “set it and forget it” boat. Because it is a 20-foot boat, passenger position, rear ballast level, bow weight, wedge position, and side-to-side balance can noticeably change the wave.

Common wave setup complaints include:

• One side of the wave looking cleaner than the other
• Port-side wave needing more adjustment
• Too much rear weight causing wash or splash
• Wave losing shape when passengers sit too far back
• Needing bow weight to lengthen the pocket

This does not mean the A20 has a bad wave. It simply means owners may need to spend time dialing in the setup. A good starting point is usually full center and bow ballast, moderate rear ballast, careful crew placement, and small speed adjustments.

5. 2016 vs. 2017 Power and Heavy Ballast Use

For shoppers comparing a 2016 Axis A20 and a 2017 Axis A20, engine and ballast use are worth paying attention to. The 2016 model is often discussed with the Monsoon 350 setup, while 2017 models are commonly associated with improved torque and wake/surf package updates.

If you plan to run heavy ballast, extra lead, a full crew, and the wedge at the same time, engine condition and prop selection matter. A boat that feels fine when empty may feel slower to plane or harder to control when fully loaded.

Used buyers should ask about:

• Current prop size and pitch
• Typical ballast setup used by the owner
• Engine hours and service history
• Whether the boat is used at high elevation
• How quickly the boat reaches surf speed when fully loaded

6. Service Engine or Warning Light Concerns

Some 2017 Axis A20 owners have discussed service engine warnings or MIL-style alerts that appear intermittently. In some cases, the warning may go away after restarting the boat. However, that does not mean the issue should be ignored.

Because modern wake boats use engine computers, helm displays, ballast controls, and Surf Gate electronics, a warning message may come from several systems. A buyer should not rely only on what the seller says. It is better to have the boat scanned by a dealer or marine technician if any warning appears during inspection.

Before purchase, ask for:

• Recent service records
• Fault history if available
• Battery condition
• Sensor or display repairs
• Any previous Surf Gate or ballast electrical repairs

7. Trailer Loading and Hull Clearance Issues

A smaller but important issue reported by some owners involves trailer loading and clearance around the raw water intake or trailer bunks. If the bunks are not positioned correctly, certain underwater hardware can contact the trailer during loading or unloading.

This is especially important on a used boat because the problem may not be obvious from a quick walkaround. Inspect the bottom of the hull, intake area, trailer bunks, and any gelcoat wear marks. If you see scraping, gouges, or repeated contact points, the trailer may need adjustment.

8. Deck, Swim Platform, and Interior Wear

Like many wake boats, the Axis A20 gets a lot of foot traffic. Riders climb in and out with wet feet, boards hit the swim platform, and gear is often dragged across the cockpit floor. Over time, factory mats, carpet, or platform pads can wear, peel, fade, or lose grip.

Common wear areas include:

• Swim platform pad edges
• Rear locker step areas
• Cockpit walking paths
• Helm flooring
• Bow entry area
• Areas where wet riders step back into the boat

If the original flooring is worn, slippery, stained, or peeling, upgrading to custom boat flooring can make the boat look cleaner and feel more comfortable underfoot. For Axis owners who want a model-focused replacement, custom Axis boat flooring is a practical way to refresh the cockpit, swim platform, and high-traffic deck areas.

9. Stereo, Switches, and Electrical Accessories

Axis boats are often described as simpler and more value-focused than premium Malibu models, but they still rely on several electrical systems. Stereo amps, ballast switches, display functions, Surf Gate controls, lights, and pumps all need solid wiring and battery health.

Common things to check include:

• Stereo amplifier power
• Dash switches
• Ballast control switches
• Battery and breaker condition
• Navigation lights
• Bilge pump operation
• Display warnings or fault messages

Electrical problems are not always expensive, but they can be annoying on the water. For used buyers, it is worth testing every button, switch, pump, and accessory before making a deal.

10. Simple Interior and “No-Frills” Feel

The Axis A20 is often praised for value, wake performance, and simplicity. However, buyers coming from more expensive tow boats may notice that the A20 has a more basic feel. It may not have the same luxury interior, touchscreen features, premium upholstery details, or advanced electronics found on higher-end models.

For many owners, that is part of the appeal. The A20 is easier to understand, easier to maintain, and usually more affordable than a luxury wake boat. But if you expect a high-end cabin feel, the A20 may feel more functional than fancy.

Used 2016–2017 Axis A20 Buyer Checklist

Before buying a used Axis A20, use this quick checklist during inspection:

• Test all ballast fill and drain pumps
• Check rear ballast bags for leaks, air lock, and uneven filling
• Run Surf Gate on both sides
• Watch for Surf Gate locked warnings
• Test speed control with ballast loaded
• Check for service engine or MIL warnings
• Inspect trailer bunks and hull contact points
• Look for worn or peeling swim platform mats
• Inspect cockpit flooring for stains, lifting, or slippery areas
• Test stereo, lights, switches, bilge, and accessories
• Review service records and engine hours

Can EVA Foam Help Improve an Older Axis A20?

If the mechanical systems are healthy, one of the easiest ways to improve an older Axis A20 is to refresh the deck surface. Marine-grade EVA foam can help create a cleaner look, softer step, and better traction for riders moving around the boat with wet feet.

For DIY projects, custom EVA foam sheets for boat can be used for cockpit areas, swim platforms, cooler tops, step pads, and other custom marine surfaces. This is especially useful for older boats where the original flooring is worn or where the owner wants a more modern custom look.

Final Thoughts

The 2016–2017 Axis A20 is still a strong option for riders who want a compact wake boat with good surf potential and a simpler layout. Most of the common problems are related to ballast performance, Surf Gate operation, speed control, electrical details, and normal wear from heavy water-sports use.

If you are buying one used, do not judge it only by how clean it looks on the trailer. Test it on the water, fill the ballast, run the Surf Gate, check the warnings, and inspect the deck carefully. A well-maintained A20 can be a fun and capable wake boat, while a neglected one may need pump repairs, electrical work, flooring upgrades, or surf system troubleshooting before it feels right.