Tamara Ecclestone "doesn't have the energy to argue" with her husband since becoming a mother.
The socialite admits she and Jay Rutland - who she tied the knot with in June 2013 - used to clash before having their daughter Sophia, 21 months, but since her birth they can't be bothered to quarrel.
She told new! magazine: "We're a family unit. We used to bicker about small things before Sophia came along, but now those things don't matter.
"We just don't have the energy to argue over who left the toilet seat up. We're very settled and happy."
While Tamara is thoroughly enjoying motherhood, she isn't keen to have another child just yet and wants a big age gap between Sophia and her sibling.
She added: "I want to enjoy Sophia fully. There's four and a half years between me and Petra, and we're really close so I think that's a nice age gap.
"I can remember her being born, so I'd like to wait a bit longer. I'm happy with the three of us for now."