It's important to note that "best MPG" is relative and depends heavily on driving style and conditions. Other trucks like the Ford F-Series Super Duty or Ram Heavy Duty also had diesel options, but their MPG would likely be lower than the Amarok's. Finding exact EPA numbers for a 2011 Amarok may require searching used car listings that specifically list fuel economy or consulting international fuel economy databases, as US EPA data may be limited for that model year and market.