Possible Clues:

• Showed approval, or disapproval
• Showed supreme satisfaction
• Expressed approval, perhaps
• Sounded like a lion
• Shouted about in street
• Made long loud sound like lion
• Sweep what's in the red; there was a lot of it, by the sound of it (6)
• Without exhaust, that's what your car did about in the road
• Got up about a ruddy end with a lot by the sound of it
• By the sound of it, made a lot of one sweep in the red