Consumer Reports lists models with excessive oil consumption

Consumer Reports lists models with excessive oil consumption

Consumer Reports has published a list of vehicles that appear to experience excessive oil consumption.

“In our survey of owners of about 1 million vehicles stretching back 10 years, we found that for certain models, significant numbers of consumers have to add a quart of oil to their engines as frequently as every month,” the magazine notes.

The survey found the worst offenders to be Audi’s 2.0-liter turbocharged four-cylinder engine and 3.0-liter V6, along with BMW’s 4.8-liter V8 and twin-turbocharged 4.4-liter V8. Subaru also appeared on the list, though its 3.6-liter six-cylinder engine and 2.0- and 2.5-liter four-cylinder mills did not require as much extra oil as the German powerplants.

“The worst case showed that, overall, owners of BMW 5 Series vehicles with V8 engines were 27 times as likely to suffer excessive oil consumption as owners of an average vehicle,” the report adds.

BMW blames long intervals between oil changes (up to 10,000 miles) as a contributing factor. The company further argues that some of its engines may consume up to a quart of oil every 750 miles “under certain driving conditions,” and M models may consume even more.

The behavior has frustrated many owners and led to lawsuits. Some automakers, including Honda and Toyota, have extended their powertrain warranties for certain engines that are prone to high oil consumption.

Consumer Reports believes that any engine that burns oil between changes should be repaired under the powertrain warranty,” the magazine argues. “But automakers often shield themselves in the fine print of their owners’ manuals.”

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