Originally Posted by Bogdon
I came across this link regarding the most troubled production years for the Grand Marquis:
https://www.carcomplaints.com/Mercury/Grand_Marquis/
According to the bar graph, 2005 and 2003 weren't (comparatively speaking) good years.
Had a 2005 Crown Vic. Put 270K miles on it. Mostly highway. Only things it needed was a water pump and accumulator.
Window regulator were never touched probably cause I just set the temperature and left the system on the entire time I had it. I do that with all my vehicles.
Finally changed out the plugs 200K miles. They still looked okay. Saw no difference in performance. Just plugs were changed. Nothing else.
Used only 87 octane. Mostly Exxon-Mobil.
Used 5W20 the entire time. It was either Motorcraft or Mobil 1. Used no oil between changes.
No Suspension work needed to my surprise and it was driven in NYC a lot in the summer months.
I did have to get it repainted as the White Paint started peeling. Ford refused to help me as I was just out of warranty. They would NOT even pay for half of it.
The 4.6 Crown Vic was the most trouble free vehicle I ever owned.
It was formally a rental car from Hertz in Orlando before I owned it. Bought it with 19K miles on it. Service records said it was serviced every 5K miles.
With that said my 2016 Tahoe LT is much more comfortable on those long trips from Miami-NYC. My 5.3 Tahoe gets the exact same mileage as my 4.6 Crown Vic did.