What kind of gas does the 2005 Volkswagen Jetta take?

The non diesel engine options use 87 octane regular unleaded gasoline for the 2005 Volkswagen Jetta. The octane rating is the measure of a fuel's ability to resist "knocking" or "pinging" during combustion, caused by the air/fuel mixture detonating prematurely in the engine. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88“90 (midgrade), and 91“94 (premium). But should You use a higher octane gasoline in Your vehicle Well the recommended gasoline for most cars is regular octane. In fact, in most cases, using a higher octane gasoline than Your owner's manual recommends offers absolutely no benefit. It won't make Your car perform better, go faster, get better mileage, or run cleaner.