"I will sell you this car based on the seat alone!" boasted Charlie Baker, the project leader for the new Accord. But which car? The Sedan and Coupe seats are different, with the Coupe's bolstering providing a more secure fit at the torso, and a lower seating position. If our decision were based on the seat alone, we'd buy the Coupe. Especially in leather, much nicer than the velour, which curiously felt smoother in black-and-gray than brown-and-beige. That was probably in our head. But it definitely looked classier in black.

We did not get enough seat time in any of the models we drove to evaluate comfort after long hours in the saddle, which is the true test of a seat, but we can say that even the Sedan seat has a certain one-with-the-car feel.

The Sedan seat, for the masses, has been widened by 1.7 inches and its backrest made taller. The cushion, springs and new urethane padding are all intended to reduce vibration. The vertical travel in the manual LX seat, with lever operation, has been increased by 1.5 inches, a nice touch for women. The steering wheel has been angled more toward the driver and raised almost an inch. It tilts as before, and now telescopes as well, by 1.5 inches.

The space below the steering wheel and instrument panel was enlarged, and the foot room increased. But in the rear, the new front seats seem to have a mixed effect; there's slightly more knee clearance, but overall leg room has been reduced by 1.1 inches to 36.8 inches. That's 1 inch less than the 2002 Toyota Camry, but 0.4 more than the Nissan Altima and 1.5 inches more than the Volkswagen Passat.

Compared to these cars, the Accord Sedan trunk comes up small, with a volume of 14 cubic feet, although the flat floor will make it very easy to load things. The Camry has 17 cubic feet, Altima 16 and Passat 15. Now you can see the cheetah profile, in those numbers. The Coupe looks more like a cheetah. Its trunk holds 13 cubic feet.

The excellent, clear analog instrumentation is also all new, with large faces and LED illumination, another feature previously found only in higher-priced cars. There's dual-zone climate control on some EX models. The switchgear, primarily three big dials located in the center of the dash, is simple, if not particularly attractive. However the faux carbon fiber trim on one of the models we drove looked nice, while the brushed aluminum on other models wasn't bad either.

The simple big switchgear is a result of the successful search for efficient use of space, with the audio, climate and optional navigation systems integrated into a single unit. The freed space leads to exceptional cabin storage, including a good glovebox, big center console, bin under the audio system that will hold 12 CDs, and door pockets deep and wide enough for a purse.

All three sound systems are upgraded, featuring stuff like two-band compression and five-point parametric equalization, which sounds nice, pun intended. The Premium system includes a six-disc in-dash CD changer, having a 180-watt amplifier with four twin-neodymium speakers with polypropylene cone woofers and soft dome tweeters, which sounds even better. But here's the real-world test: We took the V6 Coupe six-speed on a flat-out blast through the Malibu hills, engine revving to redline, windows wide open, CD celebrating Bob Marley, and even with the exterior noise, max volume on the sound system wasn't necessary for the full effect.

The attention to detail shows in every corner: coinholders, cellphone cord hooks, grab handles over every door, console lights, power outlets, sunglass holders, sliding armrests for different-sized arms, convenient and versatile access to the trunk from the rear seat, a remote entry that opens or closes all four windows, and last but definitely not least, a total of eight cupholders, a couple of them big enough to hold a liter-sized water bottle but, with four-spring prongs, secure enough to grip a paper coffee cup. But if you could distill this attention down to one example, it would be the solid, pleasurable and unique sound of the turn-signal click.

Oh, we almost forgot about the performance of the interior. In three words: smooth, firm, quiet (when we wanted it to be). Interior mission accomplished.