(April 20, 2015) SANTA MONICA, Calif. — Hyundai's Sonata hybrid sedan, now selling at an average of 20 percent off the manufacturer's suggested retail price, tops the list of best savings on new vehicles in April, according to TrueCar, Inc.

Given current sustained low gasoline prices, fuel-efficient vehicles are primed for large savings this month. A gallon of regular gasoline averaged $2.429 nationwide on April 17, according to AAA's Daily Fuel Gauge Report, down $1.23 from a year ago.

Pump prices this summer are projected to hit a decade low, benefiting drivers planning vacations by car or road-trip. Low fuel prices are also working in favor of consumers looking to purchase fuel-friendly vehicles and who want notable savings off the retail price.

"In time for Earth Day on April 22, our detailed transaction data tells us it's a great time to buy a fuel-saving vehicle," said Eric Lyman, TrueCar's vice president of industry insights. "While cheaper gasoline helps make trucks and SUVs more appealing, it also creates an opportunity for consumers to purchase vehicles that will be kind to your pocketbook when gasoline prices rise."

The midsize 2015 Sonata Hybrid averages 38 miles per gallon of gasoline in combined city and highway driving. Toyota Motor Corp.'s subcompact Prius c hatchback, which averages 50 mpg, follows the gasoline-electric Hyundai model, currently selling at an average of 16 percent off of MSRP this month.

Published monthly, the "TrueSavings" report analyzes recent transaction prices and identifies opportunities for consumer savings. A snapshot of some of the best savings (compared to MSRP) on new vehicles in April 2015 includes: