1. 2010 Honda Civic Lx: The Lx model of the 2010 Civic typically comes equipped with a 1.8-liter engine. The average price range for a used 1.8-liter engine can be between $1,000 to $1,500.
2. 2010 Honda Civic Ex: The Ex model often features a 2.0-liter engine. The average price range for a used 2.0-liter engine can fall within the range of $1,200 to $1,700.
3. 2010 Honda Civic Si: The Si model carries a sportier engine, usually a 2.0-liter i-VTEC engine. The average price range for a used 2.0-liter i-VTEC engine can be around $1,500 to $2,000.
These price ranges are just estimates and can vary depending on factors such as the condition of the engine, its mileage, and your specific location. It is always advisable to compare prices from different sources, consider shipping cost if purchasing online, and seek professional advice if you are unsure about the exact engine you need or the compatibility of a used engine with your vehicle.