Ant was found to be twice the legal limit when he crashed his auto into two other vehicles in South London on March 21.
He also received a 20-month driving ban and has also been ordered to pay other associated costs totalling £390.
McPartlin gave a roadside breath reading of 75 microgrammes of alcohol per 100 millilitres of breath - the legal limit is 35 microgrammes.
The judge described McPartlin's previous "exemplary character" adding: "I think it will have quite an impact on you to know you're no longer a man of good character".
Fining him, the Judge said: "Because of the seriousness of this offence, the financial pain must be imposed on you as on any other offender".
Following the sentencing, Ant told reporters outside court he is "truly sorry for what happened".
Ant can't bear to watch
The court was told that that Mr McPartlin was receiving treatment for "alcohol and emotional issues".
The driver of the other Mini vehicle also told the court they thought they could have died in the incident.
In his statement to police the court heard McPartlin said "I am very sorry I did this". In it he accepted full responsibility and said that he is "ashamed and mortified" and that he intended the incident would be a turning point for him.
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