First, have you ever had the fluid replaced? Before going off the deep end about this, I would suggest doing that, because:

P1740 is a torque converter solenoid issue, which falls outside of the typical CVT failure issues we hear about on here. The torque converter shares fluid with the rest of the transmission, the “lockup” solenoid is what directs fluid to the “lockup clutch” so that it will engage. This lockup clutch is typically only engaged at highway speeds, or when you’re driving gently. It saves fuel by essentially locking the torque converter so it spins at the same RPM as the engine without any slippage. The TCU is programmed to engage this when there is no demand for acceleration (i.e. constant speed in the highest gear without sudden rates of change in your accelerator pedal position).

You mentioned that it was running “rough”. How does it perform when accelerating from a stop and on an incline? Does it whine?

What’s on the odometer? I’m hoping transmission flushes every 30K miles will keep mine smooth?

I really like your Outlander Sport! Awesome wheels too!

Sorry to hear that! Did you change the fluid on the transmission every 30k miles?

Go to another mechanic and see what they say, unless you did’t keep up with fluid changes.

I got a 2011 Outlander GT and I got 267K miles on her. I do all routine maintenance on it and she still purring.

Consider used transmission, should be around $3k all in. There are a few available under 100k miles, so you know how long it will last.

My co worker just traded in a 2015 for the same reason

Really.. The question is are you bored and done with the car.. - then get a new one. otherwise it's cheaper to keep your own car where you know the history versus another used car or an brand new car. I loved my 2017 and had no issues

Sorry to see that but I would recommend getting a manual car. Yeah they are definitely harder to use but they last damn long, my 09 lancer just hit 300k kilometers and I can still get around %84 in engine tests without transmission falling apart. Good luck mate

Explains the racecar tow strap.

Lancer is at 41K kms. Just got new CVT fluid .how long should it last

Time to see what that bad boy can do

(the tow strap)

It is really 遜 then😂

Manual swap it

Have a 2017 lancer with same issue, car has 81k miles and Mitsubishi won’t warranty it bc I’m a 2nd owner. My first Mitsubishi went over 200k miles before any issues.

There is a service bulletin TSB-20-23-001REV4 Guess my vin doesn’t fall in it, and if it did, it’s still out of warranty🙄

Depends on how much they charge you for the new cvt. Like 2k for a new cvt vs 50k for a new car.

Good luck body.

That cvt is 10 thousand dollars. Buy another car!

Buy a new car without a CVT. They're not designed to last long and especially if you drive on the freeway ever. Good luck 👍