Mazda 5

Hello just need a little help here, I have a 2010 Mazda 5 with 167k, have not had any problems till now. At 65-75 mph it starts to hesitate but does not stall. Does anyone have an idea what this could be. Just had an oil change approx. 50 miles ago.
 
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2009 Mazda 5 GT
When did you last:
Clean throttle body?
Clean MAF Sensor?
Replace air filter?
Replace spark plugs?
Replace transmission fluid?

These are the first things I'd suspect for what you're describing.
 
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2010 Mazda 5 Sport
Does the hesitation stop being evident after 75mph? It doesn't do it at all in lower speeds but similar RPMs?

I would assume it's not a transmission issue since the transmission should be in top gear at that point and isn't going to shift.

I am almost guessing that it might be a fuel pump not giving enough gas at the top end.

I would suspenct plugs or wires at lower RPMs. Those generally smooth out at higher RPMs.
 
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2014 Mazda5 Sport auto
I'd check the oil level. It's not uncommon for kids to put too much which will cause running issues and even destroy your cat.
 
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