While the NSX's interior has been criticised for being a bit too ordinary when compared with its supercar contemporaries, the benefit is that it's very hard-wearing. All but the JDM special editions came with air conditioning and most have electrically adjusted leather seats, cruise control and radio-cassette player. A CD stereo was made standard in 1997, while a passenger airbag was fitted from 1993.
There's very little to worry about in an NSX's cabin beyond normal wear, though make sure the passenger's electric window operates properly as it gets little use and fixing a stuck window is pricey. The air con should chuck out plenty of warm or cold air as appropriate. Honda switched to a more ozone-friendly R134A air con refrigerant in 1993, so all cars should have this now. Some early NSXs suffer from the ventilation fan only working on its fastest setting, which is another niggling fault that can be expensive to rectify. Also check the heating's digital display is bright and clear.
The Targa version of the NSX has a lift-out roof that stores under the glass rear hatch. It's a neat solution, but watch for any chips or damage to the targa panel from careless removal or refitting.