The fact that this engine is a diesel is only
apparent if you listen for the faint diesel clatter with the window open, because with the cockpit windows closed, driver
and passengers are comfortably insulated from any
noise,
vibration, or harshness coming from the outside world.
One point that's immediately
apparent when driving the new Accord is the reduction in
noise and vibration that Honda's engineers have achieved — the cabin is impressively quiet.