Any common, lesser-known (big significant) issues with 2016 Prius I should know about before buying?

Only time will tell, when the Gen 4 accumulates high mileage.

 

It's not like all the windshields crack. But more than should be. I have a friend who has gone through three of them. Otherwise, no real problems.

Many Gen 4s make a ticking noise from the left front axle area when gently decelerating under about 20 mph. So far, Toyota doesn't seem to have a solution but I haven't seen any reports yet of it causing anything other than irritation from owners. Our '17 Prius and '17 Prime make the sound. Been doing it forever and it doesn't seem to get worse.

But, as @Georgina Rudkus said, it's still a pretty new car. Time will tell. But so far, so good. There's at least one member here with over 100,000 miles on his Gen 4.

 

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Some of the early 2016 had speedometer that couldn’t be switched to alternate units, say mph to kmh, or vice versa. Can’t recall if it was some month during 2016 model year. Maybe @Prodigyplace would know.

 

If I recall correctly, it was all US 2016 Prius cars produced before February 2016.

 

Time will tell. And all dependent on how well the previous owner took care of the car, similar to any other car. Gen 3, people who didn't change spark plugs in a while, haven't done consistent oil changes, or left EGR filthy encountered knocking during startups. This is probably related to head gasket issues as well. I know my Gen 2 faced burning oil, but I will admit that my oil changes weren't as consistent, maybe related to head gasket issues. My 10 years of owning the Gen 2, I only had to replace the windshield once. I made it to 12 years with my Gen2 before I had my battery go bad and filling up a quart of oil every month.

 

My 2016 has done this, left side only, since a few months after I bought it. I brought it to the dealer's attention several times, they could never hear it. But, as you said it never seems to get worse and it doesn't seem to be impacting anything. 70,000 miles on the clock so far.

 

Good to hear. I'm only at about 48k now.

 

A while ago mine did this, did a demo ride with the dealership tech, and they replaced the front left axle under warranty and not a peep after that. When I did the demo ride I made sure to fully warm up the car, and slowly braked in the left lane of a one-way street, so the sound could bounce off adjacent parked cars.

 

Back when the GR Supra first hit the dealership showroom floors I went to go check it out in person. While there I also browsed through their used lot and saw a 2016 Prius with almost 180k on the odometer. I actually wanted to buy the prius if the price was right but the dealership still wanted like $12k for it. Lol.

I wouldn't worry too much about the longterm reliability of the 4th gen Prius.

 

Drove 52k miles in my gen4 2016. Zero faults.

I had one of the first 100 gen4 2016 imported to the uk and one of the first 50 gen4 2019 in the uk and this problem was not evident.

 

Just us early birds in the US suffered this diminished capacity...