Women have benefited from smaller car insurance premiums due to their lower accident rates, and predictions as to how they will be affected have varied widely.
Some analysts believe younger women could see their premiums almost double, while others forecast that the increases could be more gentle than expected.
Young women are likely to bear the brunt of the increases, due to the higher accident rates of young men, which experts warn could force many younger female drivers off the road.
Meanwhile, some men could see a small reduction in their premiums.
With the new gender equality insurance rules coming into force today, here are seven tips on how to reduce your car insurance.
New rules mean that insurers are no longer able to take gender into account when calculating the price customers pay for insurance.