Judge Jonathan Down accepted the submissions, saying he would reduce the starting point he had intended to impose. But he noted when not under sentence, Cowan continued to reoffend.
"I have to consider my public duty for general deterrence.
"You can't constantly breach the law in this way and not expect to receive the ultimate sentence of imprisonment.
"Prison won't be easy for you in your retirement years but I don't assess you as demonstrating any real remorse - only for the fact that you got caught.
"The public deserves a rest," the judge told him.
From a starting point of six months, the judge lifted the sentence to eight months due to Cowan's previous offences. He gave a full 25 per cent discount for Cowan's guilty pleas.
The sentence included indefinite disqualification from driving and standard release conditions.
Mr Sceats was concerned that Cowan's previously-impounded vehicle had been sold before the case was finalised.