Is $400 a Month a Lot for Car Insurance?

These are the questions most people ask when a $400 bill lands. Each is answered plainly here and explored in more depth further down.

• 1
  Is $400 a month too much for car insurance? For most drivers with clean records — yes. It’s roughly double the $208/month national full-coverage average

  The national full-coverage average sits between $190 and $244 per month depending on the data source, with the most frequently cited figures clustering around $208. At $400, you’re paying meaningfully above that — but whether it’s unreasonable for your specific situation depends on your age, driving record, location, vehicle, and credit score. All five of those can independently justify a $400 premium. If none of them apply, it’s almost certainly time to compare.
• 2
  What’s the most expensive state for car insurance right now? Nevada at $335/month average full coverage · Louisiana $327/month · Florida $311/month · In these states, $400 is high but not extreme

  Nevada, Louisiana, and Florida top the list — each running more than 50% above the national average. Connecticut and Delaware round out the top five. If you’re in one of these states and paying $400 for full coverage without violations, you’re still above average for your market but not dramatically so. In low-cost states like Vermont ($117/mo), Maine ($129/mo), or Wyoming ($131/mo), a $400 bill is almost impossible to justify with a clean record — comparison shopping in those states is urgent.
• 3
  Why did my car insurance go up to $400 without any accidents? Most common causes: a policy renewal with quiet rate increases, a credit score drop, a new vehicle, or your insurer pricing you less favorably than competitors would

  Insurers file rate increases with state regulators regularly, and they rarely call your attention to them at renewal. You may have received a notice buried in a renewal packet you didn’t scrutinize. A dropped credit score in the 46 states that allow credit-based pricing can raise a premium by 98% or more on its own. A new or newer vehicle that’s worth more also increases comprehensive and collision costs. And sometimes there’s no single cause — the insurer just repriced their book of business and your profile got hit. The remedy in all these cases is comparison shopping.
• 4
  Is $400 a month normal for a 17, 18, or 19-year-old? Often, yes — U.S. News found a 17-year-old male averages $800/month alone; on a parent’s policy, $400 for the full household is on the lower end

  Teen and young adult drivers represent the single most expensive insurance tier in existence. A 17-year-old male driver averages over $9,600 annually — roughly $800 a month — on their own policy. Even added to a parent’s existing policy, a teen can add $200–$400 a month to the household bill, meaning a combined $400 total is sometimes quite reasonable for a family policy that includes one. Rates begin dropping meaningfully after 25, so the window is finite, but right now stacking every available discount — good student, telematics, assigned to the least expensive vehicle — is the best strategy.
• 5
  How much does a DUI raise car insurance? Average full-coverage cost after a DUI: $391/month — an 88% increase · Add in young age and a high-cost state and $400+ is very common

  A single DUI raises premiums by an average of $183 per month for full coverage nationally — pushing the average driver’s bill to $391 a month. In North Carolina, a DUI can push full coverage to $592 a month. The insurer you’re with matters enormously after a violation: the gap between the most and least forgiving major carrier for the same DUI is as much as $329 per month. Shopping specifically for post-DUI rates — not just general car insurance — is the single most impactful move available after an incident. An SR-22 or FR-44 filing (required in most states for 3–5 years) adds a modest filing fee but is not the main cost driver.
• 6
  Can a bad credit score really cause a $400 car insurance bill? Yes — poor credit raises full-coverage premiums by 98% on average nationally · In some states and at some carriers, the increase exceeds 200–300%

  In the 46 states that allow credit-based insurance scoring, this factor is the second most powerful driver of premiums after driving record. Drivers with very poor credit (below 523) pay an average of $6,254 per year for full coverage — $521 per month — compared to $1,673 annually for drivers with exceptional credit. That’s a $4,581-per-year gap. State Farm penalizes poor credit the most heavily among major carriers. The four states that ban credit-based pricing entirely are California, Hawaii, Massachusetts, and Michigan. If you’re outside those states and your credit has deteriorated, rebuilding it is one of the most financially impactful moves you can make — the auto insurance savings alone can compound into thousands per year.
• 7
  Is the Tesla Model Y or any EV really that much more expensive to insure? Yes — the Tesla Model Y averages $354/month for full coverage, the most expensive of any popular new vehicle · The top nine EVs average $309/month

  Electric vehicles cost more to insure than comparable gas-powered cars primarily because the specialized parts and repair processes cost more when something goes wrong. The Tesla Model Y averages $354 a month for full coverage nationwide — more than any other popular new vehicle — making $400 genuinely within range for a Tesla owner in a moderate-cost area, or completely expected in a high-cost state. EV insurance costs are falling in 2026 as repair infrastructure has caught up, but they still run about $65–$95 a month above a comparable sedan like the Toyota Camry ($179/mo) or Honda CR-V ($214/mo).
• 8
  How much can I actually save by shopping around? More than most people expect — the spread between cheapest and most expensive insurer for the same driver can exceed $500/month in some states

  In Connecticut, the cheapest and most expensive major insurer for the same driver differ by over $500 a month. Even in less volatile markets, the difference between the most and least expensive carrier for identical coverage regularly exceeds $80–$150 a month. After a DUI, Progressive averages $61 more per month for the same profile that Nationwide prices $329 higher. These gaps are real, significant, and available to anyone who takes the time to request quotes with identical coverage levels from multiple carriers. This single step — more than any discount or coverage change — is where the most savings are found.

The same $400 bill means very different things depending on who you are. Here’s how it benchmarks across the situations that drive the most searches.

An independent insurance broker compares rates across multiple carriers at once — often the fastest way to find who has the best rate for your specific driver profile. Use the buttons below to find local options.