I've pushed spark plug replacements so I'm actually only on my 3rd set which will probably last the rest of the car's life. The second set were the Bosch Platinum+4 and did great. Current set are the Bosch Platinum IrFusion (also a +4 design).
Still on the original coils as no signs of missing. My wife has a 2005 Ford Thunderbird and she's had 4 replaced so far under warranty. Ford extended the coverage to 100,000 miles as they were apparently having issues with them. When one was starting to fail and you got an occasional miss, it was obvious even with the V8 so just can't bring myself to spend the money if they are working fine.
I should replace the valve cover gaskets as there was a very very slight amount of oil in a couple of spark plug wells when I replaced the spark plugs. I also occasionally smell some oil on the exhaust but it's not showing up on my garage floor yet.
Here's my list of repairs on the drive train.
- Starter - ~95,000 (covered under extended warranty)
- Spark plugs - 124,352
- Clutch - 134,897
- Water pump - 162,486
- Rear engine mount (dogbone) and sway bar links - 170,520
- Intake accordion hose - 196,508
- Rear pre-cat (P0421) - 220,060
- Passenger side transmission seal - 222,168
- Spark plugs and intake plenum gaskets - 259,832
- Front pre-cat (P0420) - 275,378
- Driver's side wheel bearing and endlinks - 298,177
I can't find the receipts for them but I know I replaced the driver's side and passenger's side CV boots as well. Otherwise, oil changes (10,000 OCI with Mobile1 EP), air filters and PCV valves.
I've been reasonably happy with the car. I think I actually had fewer repairs on my 1987 626GT which had 350,000 miles on it when we stopped driving it. Engine was still running well but the interior was getting pretty worn and the clear-coat was peeling. I replaced it with my 6s.
I'd love to have it last for another 2 years but who knows once you get to this mileage.