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2015 Toyota Prius C is still colorful, still gets 53 mpg

Few vehicles can match the affordable fuel economy of the $19,000, 53-mile-per-gallon Toyota Prius C, and that fact isn't likely to change for 2015, as the Japanese company has issued a moderate refresh of its sub-compact hybrid.
As mid-cycle refreshes go, this is a pretty standard affair, with a larger grille and tweaked LED headlights at the front of the Prius C, and more expressive taillights at the back. Toyota made some minor changes in the cabin, updating materials throughout, but not fiddling too much with the overall level of equipment.
Aside from those modest changes, this is the same fuel-efficient five-door, retaining its 1.5-liter, 73-horsepower, 82-pound-foot four-cylinder, while an electric motor tosses in an extra 26 ponies, for a total system output of 99 horsepower. Along with the 53-mpg highway rating, the C will return 46 mpg in the city.

Toyota to buck engine downsizing trend, may go larger and turbo-free

Turbocharging isn't really Toyota's specialty, and the Japanese automaker isn't being shy about acknowledging it. Koei Saga, a senior managing officer in charge of drivetrain research and development, says that eschewing turbos and increasing displacement of engines using the Atkinson cycle can produce better power gains without sacrificing fuel economy, Automotive News reports.
Toyota is investing heavily in larger-displacement Atkinson-cycle engines in addition to turbocharged engines, but Saga doesn't think the automaker will use turbocharging across many product lines. He apparently remains unconvinced that the technology "makes the world better."
In Toyota's eyes then, Atkinson cycle engines do make the world better, and here's how. Their pistons complete four processes - intake, compression, power and exhaust - in one revolution of the crankshaft, and the power stroke is longer than the compression stroke. Traditional Otto cycle engines require two crankshaft revolutions to accomplish those same four operations and have equal-length compression and power strokes. Atkinson cycle engines are more efficient, but less power dense, though increasing displacement can offset that shortfall.

What's this about a Toyota Prius Prime trademark?

The fourth-generation Toyota Prius is growing ever closer to launch and might even already be on the roads testing in heavy camouflage now. A recent filing by Toyota with the US Patent and Trademark Office for the name Prius Prime hints that the popular hybrid might get something different with its new model. As is often the case with trademark filings, the information here is quite barebones. All that is officially known is that as of March 26, 2015, Toyota owns the Prius Prime name for "automobiles and structural parts thereof." Green Car Reports speculates that the moniker could be for anything from a new trim level to a completely different model in the hybrid's lineup. One possibility at least to consider stems from a rumor from last year. According to that speculation, the next Prius might be offered in two versions: one with a nickel-metal hydride battery getting around 55 miles per gallon and another with a lithium-ion pack capable of over 60 mpg. The Prime name could actually work for either of them. Of course, a trademark filing also isn't a guarantee of a vehicle actually seeing production. Automakers can sit on the names for years just for safety, but sometimes they really do point to the future. Related Video: Word Mark PRIUS PRIME Goods and Services IC 012. US 019 021 023 031 035 044. G & S: Automobiles and structural parts thereof Standard Characters Claimed Mark Drawing Code (4) STANDARD CHARACTER MARK Serial Number 86577082 Filing Date March 26, 2015 Current Basis 1B Original Filing Basis 1B Owner (APPLICANT) Toyota Jidosha Kabushiki Kaisha TA Toyota Motor Corporation CORPORATION JAPAN 1, Toyota-cho Toyota-shi, Aichi-ken JAPAN 471-8571 Attorney of Record Roberta S. Bren Prior Registrations 3625763;4091489;4219530 Type of Mark TRADEMARK Register PRINCIPAL Live/Dead Indicator LIVE