EPA's estimated gas mileage 40/29 was questioned by Consumer Watchdog, a Santa Monica CA consumer group. USA Today writer Jefferson Graham claimed to get combined city/highway mpg of 22 mpg. However, a real-world test by "Popular Mechanics" showed significantly better fuel economy than EPA estimated MPG. Also, The Truth About Cars editor tested real-world MPG, leading them to give Consumer Watchdog a thumbs down. EPA mileage estimates were originally in the city and on the highway but were revised to in the city and on the highway due to a series of testing procedural errors in November 2012. The underpinnings of the second-generation i30 and Elantra were similar in their configuration and makeup. The similarities between the second-generation i30 and Elantra continued in front end and suspension characteristics.