The owner's manual for our BMW 328i convertible weighs close to three pounds, contains 566 pages, and measures 7x8x2 inches. (All specifications verified within our mobile electronics lab.) It is also the first owner's manual I can recall that won't fit in any interior storage compartment of the vehicle for which it's designed.

I discovered this when I went looking for it for some tidbit of operational instruction, and started my search with the glove box—which is, after all, a far more likely spot to find the manual than, well, say, a pair of gloves. No dice. Next, I tried the door pockets, the console compartment, and, in desperation, under the front seats. Nope. I finally found it where a previous driver had left it, tucked up into the passenger footwell, leaning against the transmission tunnel.

In all fairness to BMW, we're talking about a lot of information here. They do make sophisticated vehicles with complicated controls. So much so that there are actually seven manuals, including the main manual and separate ones for vehicle care; the radio (26 pages); service and warranty; safety tips; and a driver reference guide. Think of the reference guide as sort of an abbreviated manual for those too busy to read all 325 pages of manuals - a CliffsNotes, if you will. There's also a 152-page road atlas, an 80-page dealer directory, a four-page accident assistance form, and a BMW club membership flyer. They ought to include another membership card for a reading circle. It all gets packaged in a nice leather case with no place to go.

Nowhere in any of this information did I come across any helpful tips as to what to do with the manual when one is not reading it, but I might have missed it. I didn't miss the part in the introduction where they encourage you to "pass over" the manual to the new owner if you ever choose to sell the car. Not 'leave it in the car", but pass it over. They don't say what to do with it in the mean time.

My colleague, Senior Automotive Engineer Tom Mutchler, our resident interior guru (with a related masters degree, to boot), tells me BMW is not alone with manuals growing so bloated you can't keep them in the car. He said several Infiniti models we've tested recently have a Velcro pouch in the trunk for their manuals. I guess I didn't notice because their controls are more logical than the 328's, so I never had to go looking for reference help. 

In the end, the best, and perhaps only place for the manual is in the trunk. That way, it can double as a wheel chock in a pinch. At least our 328i isn't equipped with the dreaded iDrive. Then we'd probably need a trailer.

—Jim Travers

Read our road test of the BMW 328i and other convertibles, complete with videos. No manual required.