well if it is still in the vehicle look on the bottom side of the hood on the car it should be somewhere on there it should say emission information it will tell you how many CI's the car is and How many litres the engine is or you can get the VIN number of the dash on the drivers side and call your local Hyundai dealership and ask to speek to the parts deparment explain your situation to them and they should be able to tell what engine came in your vehicle when it was new
Answer
it depends on the year of accent . most of them are all 1.5L SOHC 12V engines except some of the Hyundai Accent GT's which have bigger motors.
The 2008 Hyundai Accent has an inline 4 engine.
The 2011 Hyundai Accent has an inline 4 engine.
The 2010 Hyundai Accent has an inline 4 engine.
The 2003 Hyundai Accent has an inline 4 engine.
The 2009 Hyundai Accent has an inline 4 engine.
The 2007 Hyundai Accent has an inline 4 engine.
The 2006 Hyundai Accent has an inline 4 engine.
The 2012 Hyundai Accent has an inline 4 engine.
The 2001 Hyundai Accent has an inline 4 engine.
The 2013 Hyundai Accent has an inline 4 engine.
The 2004 Hyundai Accent has an inline 4 engine.
The 2005 Hyundai Accent has an inline 4 engine.