2015 Chevrolet Sonic RS Manual. ATTENTION!! Real gas sipper!!! 34 MPG Hwy** SPECIAL WEB PRICING... Want to feel like you've won the lottery? This 2015 Chevrolet Sonic RS Manual will give you just the feeling you want, but the only thing your long lost relatives will be after is a ride. Optional equipment includes: Power Tilt-Sliding Sunroof w/Express-Open, Advanced Safety Package... Why buy this Sonic from Bill Kay Chevrolet? We have a preferred owners program w/every 5th oil change free, free car washes for life, more for your trade, 5% points back on service/parts purchases. Every new Chevrolet includes 2 oil changes/tire rotations in the first 2 years/24k miles. Price includes rebates in lieu of special APR and does not include tax, title, license, and doc fees.