2008 Honda Accord Long-Term Road Test


2008 Honda Accord: "VCM" Cylinder Deactivation

November 26, 2007

"VCM" is Honda's acronym for their cylinder deactivation system, a mode which is intended to reduce fuel consumption during light-load operation. When active, the V6 switches to three- (or four-) cylinder mode and illuminates an "ECO" light on the tach.

We'll see how effective it is as the miles pile on, but I observed the ECO light coming on quite a bit during routine driving. The switchover to and from ECO mode isn't quite imperceptible.

It's certainly more noticeable than the last VCM-equipped Odyssey we tested. On balance, the Accord's transitions are about as seamless as those observed in our cylinder deactivation-havin' long-term Tahoe.

Oh, I tried to shoot a photo of the ECO light when parked, but it doesn't illuminate when the key is on and the engine's off, so imagine it right below the tach needle.

And no way was I going to attempt to snap a pic while driving. Driving and shooting is dangerous. Just ask Scott Oldham.

Jason Kavanagh, Engineering Editor @ 3,954 miles

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