With regard to India specific enhancements, the deal was 17.08 per cent cheaper, said the CAG report, which was tabled in Parliament on Wednesday.
In terms of engineering support package and performance based logistics, the deal was 6.54 per cent expensive, it stated.
The report gives much relief to the Modi government, which has been facing fervent attacks by the Congress over the fighter jet deal.
The Centre has repeatedly denied allegations by the opposition party in the Rafale issue.
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