Well, the second place I worked at was strapped for cash, but it was also very new, very low call volume, so the units were still almost brand new. There might have been some issues in the billing department, but they were trying to build a company to last. The other company would run the heck out of the units (retirement age was 300k miles), but had a good enough in house maintenance program that very few of the units actually gave any real issues. The more I look back at my first company (30-40 unit regional IFT service) the more I realize that a lot of it was decently run compared to a lot of other services. I might have hated some of the units, but I never had to worry about the AC not working or the ambulance not starting.
Here's an example of the type of fire lane that I'm talking about:
http://g.co/maps/kwwpf
All of the red curb is labeled "fire lane."
...and yes, I've seen ambulances and engines parked in lanes like this, and it drives me crazy.
It depends. If a fire department isn't running EMS calls, how high is their call volume? Unless they're spending all day doing inspections (which also doesn't need an engine), they're probably putting more miles on the units traveling for food or shopping than actually responding to car accidents and fires (including alarms). If they are doing EMS, then the vast majority of the calls do not need an engine, just a vehicle that can ferry a few bags and some people. If you add a squad and split the crew so that if the squad is out of the station the engineer stays behind to drive the engine to a fire or car accident, then the engine should be able to sit for most to all of the day in the station.
The only exception I can think of is a fire department that will send the closest resource regardless of how far out of its district it is, including if its in another city. Of course a lot of this has to do with the So. Cal. insanity of putting paramedics on engines and EMTs on private ambulances so that the paramedics can be drug half way across the county to the trauma center and the engine has to follow them in order to collect its crew.
Also, since we're talking about city size, the city I grew up in was 9 square miles and about 60k people. Two hospitals in town, which between them pretty much can handle everything but trauma (I know one is designated for stroke, and I think one of the two is a STEMI center). Two trauma centers are 10 miles away. Now give me a good reason why an engine is needed to go 10 miles out of town simply to play taxi cab for paramedics. It might sound petty, but I'd rather have an engine restricted to quarters when the vast vast majority of the calls do not need an engine than cut a fire fighter spot (I believe they are still running 4 on an engine).