Intermittent RPM increasing while car struggles to accelerate

I have a 2015 Hyundai Sonata sport with 119,000 miles. I’ve noticed a few issues lately.

1) Car recently made a weird noise and jerking when turning on. Only happened once but not normal

2) Also I have been noticing RPMs jumps up and down and bit when accelerating at lower levels (10-20 mph) car is slower to accelerate than usual

3) today when driving up an incline car didn’t want to accelerate past 40 mph. Rpms increased but car was slow to get past 40 mark.

Any advice or guidance? Need help

Update (11/11/2019)

It’s a 2015 Hyundai Sonata sport automatic with 119,000 miles on it.

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Hi,

Get the OBDII port scanned for any codes.

If there are any they may tell you what is going on with the engine.

If you are in the USA AutoZone will do this for free.

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Can we have the exact year and engine size of your car, is it an automatic or manual shift? If automatic, check your transmission fluid for being full and color to see if it is getting dark and burnt. How many miles on the Odometer?

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