Specifically, the 2010 Civic came with two engine options:
* 1.8L i-VTEC (R18A): This engine uses a single overhead camshaft with variable valve timing (i-VTEC).
* 2.0L i-VTEC (R20A): This engine also uses a single overhead camshaft with variable valve timing (i-VTEC).
It's worth noting that while the 2010 Civic has a single overhead camshaft, it's not a traditional SOHC design. It incorporates the i-VTEC system, which allows for more power and efficiency.