We have an '05 Odyssey that we bought as a CPO with 30k or so in '08. It's incredibly convenient for us, the interior room is excellent and the power sliding doors are a huge plus as parking lot spaces are becoming narrower.
From a driving perspective, my biggest complaint is the brakes. The pedal feel is horrible, it just keeps sinking the harder you press the pedal(and yes, we had the master cylinder recall done and the fluid bled at that point). I'm going to try bleeding the fluid with my Motive Power Bleeder, so we'll see if that helps.
We were looking '04 vs. '05 and the '05 had a lot of benefits when compared with the older model:
- Side curtain airbags
- VSA (stability control)
- Revised transmission
- Mother in law seat (small seat for the rear center position)
From a maintenance perspective, we did the timing belt at 6 years (only 60k on mileage at that point), and I keep up with oil changes. I also do the 3X drain & fill with Honda's ATF every 30k. We're currently around 104k for mileage.
I spent some time under the van this year on maintenance items, here's some of what I tackled:
- Serpentine belt tensioner
- Driver's side drive axle (boot was leaking)
- Motor mounts (front and rear, thankfully we have an EX which doesn't have the special and expensive rear motor mount that the ACM version have)
- Using stainless steel zip ties and hose clamps to quiet the various heat shield rattles caused by them rusting and breaking
In addition to the areas above, some of the issues are:
- brake master cylinder recall
- fuel tank recall (not sure if they have a fix yet)
- P/S fluid container issues
- A/C condenser is low and can be hit with debris (install gutter guard on the lower grille)
We take the van down to FL and back on a yearly basis, and it's perfect for those trips. We do use the roof rack and a Yakima carrier for those trips, which frees up space inside the car. We've averaged about 24 MPG on those trips (all highway, car full of kids/adults, Yakima skybox on the roof), and that's at average speeds around 70-72 MPH. In-town mileage is nothing to brag about (mid teens), it's a lot of work to get a 4,500 lb vehicle moving. I did install Air-Lift rear airbags and they do a great job of keeping the van level even while fully loaded.
If I were looking, I'd be on the lookout for one without a hitch, and with frequent ATF services. And when I bought it, I'd drain/refill the ATF ASAP.
http://www.odyclub.com is a great resource for these vehicles, with a ton of DIY info.