Just How Important is Mileage?

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In industrial applications use is usually measured in hours, but alas we have mileage in automobiles.. but... how exactly how reliable is this measurement?

The reason I ask is that I picked up my newest vehicle with 83k and it's only three years old. It's my first "high-mileage" vehicle for it's age..

I used to look for older vehicles with low mileage and so far that has worked out well. My last car was a 2000 Pontiac Bonneville (12 years old!) that had 100k when I bought it a year and a half ago, and I put 75k on in that time, nearly all highway miles of course. No major issues, but I could tell the transmission was on borrowed time at 175k, as it should be.

My real reason for posting this is: What are your guys' experience and what do you think about higher mileage cars.? I put about 30k / year on mine, so I will have about 200k on this car if I make minimum payments on the 4 year note. Do you think that's cause for concern, or do you think it still has the potential to be relatively trouble-free despite the high miles?

I know a lot will say a lot depends on the maintenance, but this vehicle and most nowadays have near lifetime fluids (except for oil), sealed bearings and such, so there's less riding on maintenace than there once was. On this vehicle, fluids and the overall condition look new right out of the showroom, so I can tell you either it was maintained well or these lifetime fluids and being relative new (3 years old) have held up well. Compression on the engine read 173-173-168-173 which is as high (or even higher) as some people have measured these engines when new. So it appears in that regard there is a lot of life left, but I understand there's other things under the hood that wear out with mileage, but which ones are affected by mileage more-so than others?

In short, what's your take on high-milage vs. older & lower mileage?
 
The suspension and drive train are effected by mileage more than age. The body and frame basically age and location (rustbelt).

The interior is a mixed bag. Anywhere from a guy who has screwdrivers in his back pockets when he sits in the drivers seat and chews tobacco to someone who vacuums the car 2 or 3 times a week.
 
I would be in the older, low-mileage camp.

The trouble with high-mileage vehicles IMO.... is you don't know how they were maintained....and many of the things that usually go bad, happen when cars reach 100K plus.

My sig car (03'Ford Focus) was bought when it was 5 years old and only had 57K on the OD. No major repairs except front brakes and a battery (at the eight year mark), and had the ATF changed out.. Currently I have over 108K....and its running beautifully.
 
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a balance of the two is best a 30yr old car with 50,000 isnt likely to be reliable but a 2005 with 200,000 could be very reliable still if cared for.
 
Originally Posted By: Oregoonian
I would be in the older, low-mileage camp.

can i interest you in a Dallas area 98 mustang GT(5-speed) with an honest every year or so he waffles back & forth about wanting to sell it, the 2 times he's tried, priced it too high(wanting $10k min), and no nibbles...
 
I am weary of older low mileage cars because the owners won't follow the time interval for maintenance. Typical mileage for a Hawaii vehicle is 1yr/10,000mi. I have two trucks bought used, an 01 Toyota Tundra with 5yrs/53,000mi and a 02 Chevy 1500 10yrs/91,000mi. The Chevy with the Dexcool I'm worried if the PO haven't changed it by time. I drain/refilled the cooling system and so far the cooling system is clean with some brown crud in the pressurized coolant tank. I also flushed the brake lines and somewhat cleaned the brake fluid reservoir, might replace it since it's partitioned and whatever black crud remains is contaminating the new brake fluid.

Nice thing about the Chevy that it has an hourmeter. I might do OCI's by hour intervals since most of the time I sit in the nations number 1 worst traffic.
 
Originally Posted By: dparm
IMO engines are plenty reliable with age. It's the rest of the car that can be a big gamble.

Agree.

My almost 300k miles LS400 just like that. The engine is running well with just about any 5-10W30 oil I throw at it.

The transmission is very reliable too, I changed the FF fluid with Toyota Type II at around 120-130k miles, then siphon/refill at 230-240k miles with Castrol Import Multi-Vehicle ATF.

Just replaced fan clutch, tensioner, fan belt ... last week. The trailing arms, front and rear, need some bushings and steering leak some where most likely at the steering rack and some other minor problems.
 
Humm? Like asking Miley Cyrus or Cher! One is old and well maintained and the other is New with High Mileage.
 
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for me if i want power i just mash it. BUT my MPG tells me if something is wrong. when i bought my last dakota i looked for one with rusty rear wheel wells. my thinking was that it was sold cause of the rust, leaving the rest in good shape. seamed to work.
 
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To me, mileage is just a number. My 2007 Honda Civic EX has 150,000 highway miles on it but if I didn't tell you that, you'd never know it by looking / driving the car. It looks Brand New!
 
Mileage is not particularly important to me if two conditions are met:

1) The price of the car with high mileage is sufficiently low enough for me to economically replace the parts that are likely to fail in the next 70-100,000 miles of use, or 6 years, whichever comes first;
2) The quality of the car built is sufficiently high enough for examples with significantly more miles are tramping around the roads with a lion's share of original parts still fitted.

This usually leads me to Japanese cars from the 90s to early 2000s.

And it has NEVER led me wrong. The last few cars I've bought all had very high miles, were all Toyotas (and one Honda) and have been as reliable as brand new cars, despite being 10-15 years old and having 190,000-270,000 miles when purchased - and have needed NOTHING other than routine maintenance to keep going, even after 6-7 years of use, handing-down to family and then enduring neglect afterwards.
 
Transmissions are the killer for a lot of high mileage cars. They just wear out, and are seriously expensive to replace sometimes, so the car gets dropped.

Rust is a big one. For me lately, changing tons of suspension parts has been pretty expensive, (ball joints, bearings, tie rods, etc, stuff just wears out).

Neglected maintenance is big too obviously. Mostly timing belts on interference motors. Plenty of those get neglected until it fails and costs more to fix the engine then the car is worth.
 
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