Saturn Aura Green Line

The 2007 Saturn Aura Green Line succeeds in its mission statement of being a cheap hybrid. While its stripped-down cabin disappoints, its entry-level drive train technology delivers decent fuel economy gains over the V-6 gasoline model.
Cnet

Possibly the biggest thing the Aura Green Line has going for it is that it's a Saturn Aura. The Aura is a handsome car that handles and drives more like a European sedan than a typical GM car. But with its 4-cylinder engine and smaller wheels wrapped in low-rolling-resistance tires, the Aura Green Line loses much of the power and pleasure that marks the top-line Aura.
CNNMoney

At $22,695, the Aura Green Line is the cheapest hybrid on the market, at least until the stripped-down 2008 Prius arrives later this month. However, to get to that price, GM cut some corners. Not enough to turn Picasso into Cezanne as in years past, but still enough to make you scratch your head.
Motor Trend

The Saturn Aura Green Line is a handsomely styled, midsize sedan with anemic-feeling gasoline-electric hybrid power and lackluster fuel economy vis-à-vis its Japanese competitors. And starting in 2008, the Aura Green Line no longer is the lowest-priced hybrid production car. The Aura Green Line, which is priced higher than an Aura with V6 and weighs about the same as a V6 Aura, gets only 164-horsepower from its 2.4-liter, 4-cylinder engine with electric motor assist. And the lower power is noticeable and disappointing.
MSN Autos

My biggest gripe with the regular Aura was its cabin, which has fit-and-finish issues that are hard to ignore. Unfortunately, the Green Line isn't an improvement in this regard; it has some glaring panel gaps you wouldn't expect to see in a brand-new model. Still, if you're looking for a hybrid on the cheap and want a sedan, the Aura Green Line, which starts at $22,695, is a sensible choice that doesn't ask the owner to make any significant compromises.
Cars.com