The difference between the two engines is a Honda civic dx stock engine is 1.6L single overhead cam nonvetch motor and the Honda civi si stock engine is a 1.6L doul overhead cam vetch motor. I'm not positive about the exact number but the difference is about 70 horse power between the dx and si motors
The two Honda models are different in terms of fittings. The Honda Civic Exi has better features and engine than the Honda Civic Lev.
Differnt wheels is about all the difference.
See Honda_civic_vp
Honda HX has a CVT (continuously variable transmission).
...the difference is in the second letter... ;)
interiors
The engine size of the Honda Civic is 1.8 litres.
the main difference is the front fenders and bumper, the rest is pretty much the same
The Honda Civic LX is a base model produced with less features then the Civic EX model. The key main differences are a larger fast engine, leather options as well as updated audio capabilities.
The 2006 Honda Civic has an inline 4 engine.
The 2004 Honda Civic has an inline 4 engine.
The 2014 Honda Civic has an inline 4 engine.