Frugal Shopper: Pricey Parts Can Push Ownership Costs Upward

March 26, 2010
2008 Mercedes-Benz ML550

2008 Mercedes-Benz ML550

The Yugo sure doesn't have a reputation for reliability or durability. But they sure are cheap to repair. Meanwhile, for several Mercedes-Benz AMG models, the cost of parts alone for routine maintenance could leave a much larger hole in your wallet than you might anticipate—even if can afford the monthly payments.

The auto-parts shopping-comparison Web site has released an Auto Parts Pricing Index report that includes hundreds of models and helps show what a significant role parts cost can have in longer-term vehicle ownership.

FrugalMechanic, which helps power the auto parts shopping functions on High Gear Media sites including, looked at six different parts that are commonly replaced as part of routine or major maintenance: air filter, brake disc, a set of brake pads, oxygen sensor, oil filter, and a spark plug, factoring in prices from more than 100 online retailers like and even When all the numbers were crunched, the company found a very wide variance between models.

Over just a few service visits, it really adds up

2009 Scion tC

2009 Scion tC

The difference can be very significant over the long run. For instance, the Yugo Cabrio cost just $113, while the Mercedes-Benz ML550 cost $493 for the equivalent parts. A single front brake disc for the Yugo Cabrio costs less than $22, on average, but an ML550 brake disc costs more than $235. Although older vehicles tended to have cheaper parts, it's not entirely a new-versus-old thing. It costs just $158 to get those six parts for a 2009 Scion tC. All said, the difference between vehicles could add up to thousands of dollars over a few years if you have to deal with less-common (or major) repairs.

2009 Porsche Cayenne

2009 Porsche Cayenne

Porsche, Jaguar, and Mercedes-Benz were found to be the most expensive vehicle marked to own, with an average of $350, $319, and $305, respectively, for the total cost of the six parts. When looking at model year as well as model, the top 30 most expensive vehicles, in fact, were all from Mercedes, Jaguar, and Porsche.

The cheapest vehicles, surprisingly, were mostly import models. After Yugo, with an average of just $116 for those six parts combined, Geo ($154), Daewoo ($156). Daihatsu ($156), and Plymouth ($169) rounded out the top five. Curiously, all five of those brands either no longer exist or are no longer sold in the U.S. But GM had many older models that ranked among the cheapest.

The single most expensive model in the study was the 2008 Mercedes-Benz ML550. Several different model years of the Porsche 911 and the Mercedes-Benz S55 AMG filled out the top ten. Only by model, the most expensive vehicles were the ML550, the S55 AMG, the 911, the Mercedes-Benz CL55 AMG, and the BMW 750i.  The Porsche Cayenne wasn't far behind.

Newer models have pricey parts...but there are exceptions

On an individual model basis, the Chevrolet Celebrity, Nissan Pulsar NX, Yugo Cabrio, Buick Reatta, and Pontiac 6000 ranked cheapest. Again, all of these models no longer exist (and date back to the 1980s), but all were still produced at the study's 1990 cutoff. Models from the past decade that boast a very low cost include the Daewoo Lanos, Scion tC, Saturn SC1 and SC2, and Kia Rio.

While this is useful information, you'll need to keep in mind that parts cost alone doesn't make a car cheap to own. Even for maintenance or repairs, the most significant cost is often labor.

You can increase your chances of keeping your motoring budget under control by looking at all the pieces of the pie, in overall cost-of-ownership assessments from sources including Intellichoice or Vincentric ( and others), which tend to include estimated repair and maintenance (including labor), insurance, and financing costs, in addition to fuel cost—all over, typically, a five-year period.

A quick check of those of some of the above-mentioned models with these sources indicated that pricey parts and high ownership costs do tend to go hand in hand, however.

Unless you're a fleet manager or small business owner simply looking to maximize the bottom line, you shouldn't choose a vehicle based entirely on ownership cost. But you won't want to completely ignore it either.


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