The FJ Cruiser uses the 4.0-liter "1GR-FE" DOHC V6. For the 2007 to 2009 model years, the engine came with single variable valve timing (VVT-i) which produces at 5200 rpm, and of torque at 3,700 rpm on 91 octane fuel. For the 2010 model year, the FJ Cruiser's engine gained Dual VVT-i technology which adjusts timing on both intake and exhaust camshafts resulting in at 5600 rpm, and on 87 octane, in addition to slightly improved fuel economy on 91 octane fuel. For model year 2011, these figures rose to at 5600 rpm, and . The 2011 onwards engine meets stringent LEV II/Tier 2 Bin 5 emissions certification Both versions of the 1GR-FE engine run normally on 87 octane fuel though they produce less power thus Toyota recommends premium fuel for demanding situations such as towing, off-roading, and driving at high elevation.