I just had this done on my 528i and it was around $350

Im not sure if there is a price different on the 3 and 5 series, but its a
number for you :)

-Branden

If you look in the manual to see what they do in an Inspection I, you
wouldn't pay for the service. They mostly change the oil and check the
fluids, where "the fluids" are essentially the radiator, the windshiled
washer, the power steering fluid and the brake fluid. The Checklist shows
some other items, but if you had issues with any of them, you'd be pointing
them out.

I don't know what they charge, but if they charged a dollar, they'd be
overcharging. Unfortunately, there aren't many things you can do to avoid
the charge.

As little as possible?  What did I win?

Last year I had Inspection 1 on my 2003 525 and it didn't cost anything.
They even gave me a car for the day while they serviced mine. I thought that
was the deal for the first 4 years and 48000 (?) miles.

N'est ce pas?

The Bentley manual says the the Inspection I service is to check the level
of clutch/brake fluid, battery fluid, coolant, oil and (replace) filter, and
the final drive and transmission, and windshield washer fluid, and check the
lube on the throttle linkage. It also calls for checking the steering
linkage and replace the batteries in the key fob.

All of this stuff is stuff that should be done each and every oil change, if
you stop to think about it. There's an outside chance that one would not
expect the oil change shop to check the steering linkage or the batteries
inthe key fob, bot all of the rest of this stuff is normal service that
should always be done when the oil is changed.

The Service Interval II is the same, with the addition of the air filter and
the microfilter, new spark plugs, fuel filter, lube door and hood hinges (it
doesn't say, but I assume the trunk lid hinges are included).

Frankly, when one buys a $35,000 for $40,000, this kind of stuff should be
done for free without one having to ask.