Advertisement
Find a Car
Go!

2010 Subaru Legacy Gets Best-In-Class Fuel Economy

Follow Bengt

2010 Subaru Legacy

2010 Subaru Legacy

Enlarge Photo

The 2009 Subaru Legacy remains one of TheCarConnection.com's favorite all-weather sedans, despite a few issues that keep its overall review rating to 7.4 out of 10. Depending if it's equipped with the base flat-four, the more exciting turbocharged four, or the smooth flat-six, it can take on a wide range of personalities, from frugal and basic to sporty or even a bit luxurious.

With fuel economy ratings that don't get any better than 20-mpg city, 27 highway, the 2009 Subaru Legacy isn't the best on gas in any of its versions. Stepping up to the top 3.0-liter six and five-speed automatic earns a so-so 17/24 rating. Admittedly, the additional driveline drag of all-wheel drive typically saps a mile or two out of every gallon, but c'mon, Subaru can do better, right?

Well, they have. The all-new 2010 Subaru Legacy achieves 23 mpg city, 31 highway in base 2.5i trim with the available CVT automatic transmission, while both the 2.5GT, with its turbocharged engine and the 3.6R with its smooth flat-six go up 1 mpg, to 18/25. The only exception to this trend is the base six-speed-manual model, which gets 1 mpg less than before in the city, at 19/27.

All said, Subaru points out that the new 2.5i CVT model gets better fuel economy than the front-wheel-drive Honda Accord, Mazda6i, Volkswagen Passat, and Hyundai Sonata—and that it's the highest-rated mid-size all-wheel-drive sedan for 2010, when you look at the EPA combined figures.

The new 2010 Subaru Legacy has grown in nearly every dimension, and is slightly heavier than the last-generation car, so the mileage boost is quite a feat. The Legacy gets a new platform, a new double-wishbone rear suspension, a host of upgraded safety and interior features, and a completely different look that—like the Impeza family introduced two years ago—does away with the frameless windows.

Yet the Legacy's base price will start at a bargain $19,995. There's a lot to talk about, but we'll save some of it as we'll be driving the new 2010 Legacy in just a few days. Stay tuned.

Advertisement
 
Follow Us

 

Have an opinion?

  • Posting indicates you have read this site's Privacy Policy and Terms of Use
  • Notify me when there are more comments
Comments (3)
  1. Lets think about this as engineers. I have not, yet, given a lot of thought to this question - Is there some inherent inefficiency to a flat four engine compared to an inline four? I would guess so offhand but have not yet given it a thorough analysis. Has any other reader of TCC done it yet?
     
    Post Reply
    Vote
    Bad stuff?

  2. Carl,
    Over the years I've asked a range of powertrain engineers this question, and the simple answer is no one configuration (in-line, V, or flat) is naturally more fuel-efficient. I have been told in the past that the individual banks of a V-6 will reach peak operating temperature sooner than an in-line 6, and it's easier to maintain that peak temp for emissions, but I've been told more recently that many of those issues were solved with modern alloy blocks and heads and controls. You could make the argument that flat and V engines expose more surface area to the outside air, but I don't think you could easily conclude that they're less efficient.
     
    Post Reply
    Vote
    Bad stuff?

  3. "Is there some inherent inefficiency to a flat four engine compared to an inline four?"
    This flat 4, makes 170hp. You are comparing wimpy Accord and Camry engines, that make 140hp, and identical gas mileage, to a flat 4 with 4wd that has 170hp. 1st gen Subaru with front wheel drive, and 130hp, got 22/32 mpg. Thats when Accord with less power got 22/30 mpg. I know from experience, I owned both.
     
    Post Reply
    Vote
    Bad stuff?

 

Have an opinion? Join the conversation!

Advertisement
Try My Showroom
Save cars, write notes, and comparison shop with hi-res photos.
Add your first car
Advertisement
Take Us With You!
   
Related Used Listings
Browse used listings in your area
Advertisement

 
© 2014 The Car Connection. All Rights Reserved. The Car Connection is published by High Gear Media. Stock photography by izmo, Inc. Send us feedback.