The 2011 Hyundai Sonata comes standard with a 2.4-liter inline-4 Theta II GDI (Gasoline Direct Injection) engine producing 200 horsepower and 186 lb-ft of torque. This naturally aspirated engine features aluminum construction, dual overhead cams, and variable valve timing. It’s paired with either a 6-speed manual or 6-speed automatic transmission. The engine uses direct injection technology for improved fuel economy, achieving an EPA rating of 22 city/35 highway mpg with the automatic transmission. This powerplant provides adequate performance for daily driving while maintaining reasonable fuel efficiency for a midsize sedan.

The 2011 Hyundai Sonata shares most parts with the 2010-2014 sixth-generation Sonata models. Engine components from the 2.4L Theta II are largely interchangeable across these years, though minor updates occurred in 2012 and 2013. Body panels, interior trim, and suspension components are generally compatible within the 2010-2014 range. However, the 2011-2014 models received updated headlights and taillights that differ from 2010. Electronic modules and wiring harnesses may have year-specific variations, so verification is recommended. The transmission is compatible across all years of this generation, making it easier to source replacement parts from salvage vehicles.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 2.4L Theta II engine has mixed reliability due to a serious manufacturing defect affecting bearing durability. While many engines run trouble-free for 150,000+ miles with proper maintenance, a significant number experience catastrophic failure between 70,000-120,000 miles due to metal debris from the manufacturing process. Regular oil changes every 5,000 miles with quality synthetic oil are crucial. Monitor for unusual noises, metal shavings in oil, or knocking sounds. Despite this major flaw, engines that avoid the bearing issue are generally reliable. Hyundai extended warranties and offered engine replacements for affected vehicles, acknowledging the widespread nature of this problem.