2011 Infiniti M56 Long-Term Road Test

2011 Infiniti M56: Fifteen Thousand Miles...And Counting

August 29, 2011


Nine months: that's how long it has taken to put 15,000 miles on our 2011 Infiniti M56 long-term test car. Our goal is to put 20,000 miles on our long-term guests in a year, so we're right on schedule.

In that time the Infiniti suffered a cracked windshield, developed a squeaky rear sunshade. The former cost a grand to replace; the latter was fixed gratis under warranty. Apart from an oil change and tire rotation or two, that's pretty much been it.

The EPA rates the big V8's fuel economy at 16 mpg city, 25 mpg highway and -- this is the important one to focus on after miles of accumulated driving -- 19 mpg combined.

Our observed average after 15,000 miles of detailed record keeping? 19.1 mpg.

Nailed it.

Dan Edmunds, Director of Vehicle Testing @I'll give you one guess miles

Leave a Comment

Research Models


Edmunds Insurance Estimator

TCO® insurance data for this vehicle coming soon...

For an accurate quote, contact our trusted partner below.

* Explanation
Have a question? We're here to help!
Chat online with us
Email us at help@edmunds.com
*Available daily 8AM-5PM Pacific