Is 189830 a lot of Mileage for a 2004 Ford Explorer

Yes is it. Terribly high. At that mileage, if I was going to buy it. I would ask if the transmission and engine have been rebuilt or replaced. Then take it to a mechanic and have him scan for codes, lift the car and see if there's damage on the body from rust. And of course what else could be damaged, rotors, pads etc. Be careful if someone is trying to sell you that car. Good Luck. VIVA MEXICO

Yes, but that is not what matters. Get familiar with the cars history and mechanical records. They will tell you about any replaced parts or collision damage and if the seller is being honest with you. If you are the seller and not the buyer, I would pull together what you have in the way of history and present it to potential buyers. The price of the vehicle should reflect both the condition and mileage but most importantly the history it. Market it or buy it as if it needs to last another 100K miles.

4.0 V-6 SOHC engine, not good. Timing chain, tensioner problems. Walk away.