I have a Corolla hatch back which is not much bigger in the boot and I have bought a layback umbrella fold stroller. I bought the Steelcraft Profile as part of the safew n sound unity travel system which ibcludes a compact baby capsule that comes out of the car and clicks into the stroller. The Stroller was $150, the capsule is about $290. Maclaren and Peg Perego do some nice umbrella fold strollers that are a bit more expensive if that is what you are after.
Good Luck