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With the overhauled 2009 Audi A4, the temperature is rising in the compact quasi-luxury sedan class. We recently tested the all-new A4 for the first time and came away impressed. Increases in length, wheelbase and interior space make it a close match to the Mercedes-Benz C-Class.

Although the Mercedes-Benz C350 trailed the BMW 335i in our last comparison test, the C-Class in its current guise represents an exclamation point of goodness in this market segment. Besting the C350 requires a car with enough talents to achieve critical mass.

And so it came to be that we tested a 2008 Mercedes-Benz C350 equipped with the Multimedia and Premium II Packages, TeleAid and slick-looking 18-inch AMG wheels with summer tires, a pricey $45,275 package that nevertheless fairly represents the fullest expression of C-Class goodness.

The 2009 Audi A4 with which we were provided by the manufacturer for this test turned out to be a German-specification car, which apparently means very little since U.S.-spec cars will differ only in the deletion of the front parking sensors and power-folding mirrors found on our test car, plus minor rejiggering of the options groups. Our A4 was equipped with 18-inch wheels and all-season tires.

Pricing of the new A4 has not yet been released, though Audi representatives have told us not to expect significant changes from today's A4. Based on this assurance — plus consultations with the magic bones and some scrutinizing of groundhog shadows — we estimate that this 2009 A4 3.2 Quattro test car will sticker very close to $45,000.

Both the Audi A4 and the Mercedes-Benz come only with automatic transmissions in the trim levels we tested. more