I heard that car insurance is cheaper if i include my spouse, why ?

I heard that car insurance is cheaper if i include my spouse, why ?

Estimate for motor insurance cost for a few months.?
Insurance once your pregnant?
"Is there any gain to permanent insurance over term insurance? I meanIf you have excessively inexpensive car  insurance  where can you have it?
"How great might a 1.6 Renault Clio RXE for highway tax"If a person who was 17 years old in 1996 (as well as a billionaire"Where can i discover when my residence was designed"Only found out I am pregnantLike SafeAuto.
Insurance or individual?
"The situation is difficult and it's also about my car insurance. I misinformed my insurance provider about my NCD. Consequently my coverage was ended by them. The problem is that before they terminated it I'd a claim. Our car was not harm in any respect nevertheless the other person had a couple of scores on the bumper and he reported the episode. I was informed by my insurance company; they return every one of the payments I created up to now and would stop the policy. They would address the expense of the damage to another dudeCould an 18 year old /university student stay on parents auto insurance?
"Just how much will my auto insurance go up for 3"Car-insuranceInsurance on the 2005 quality mustang v6?
About how much monthly does a primary time adolescent driver in Northern VA pay for motor insurance?
"What is the least expensive significant car insurance firm to get a 19-year old man"I am 17 and I got a California DUI about 2 weeks before and a.17% were blown by me. I havent visited courtroom however"I have had my permit to get a little more than 2 years. My first year buy auto-insurance was 200$ monthly (roughly) on my second year spend it had been elevated to 250$ monthly (roughly). i have never gotten into a collision or gotten any seats (never possibly been stopped...). Is that much to normal for automobile insurance raises it
What's a great first car that is inexpensive on insurance? UK?

Motor Insurance - Rates and Surplus following a push?
"Could you produce percentage promoting insurance if you do not need a brokers license in MA