Net warranty vs self-insure$1,754
Saved by self-insuring over 5 yrs
Example calculation
No, self-insuring saves $1,754
Self-insuring saves $1,754 over 5 years. Total warranty cost reaches $3,366 while expected covered claims after $300 in deductibles and exclusions return only $1,613.
Total warranty cost$3,366
$2,800 + $566 loan interest
Expected net payout$1,613
$1,913 covered minus $300 deductibles
Break-even repair total$4,313
Self-insure ending reserve$1,951
Ending HYSA reserve after paying repairs Side-by-side breakdown
Vehicle service contract versus high-yield savings repair reserve
| Metric |
Buy extended warranty |
Self-insure in HYSA |
Year-by-year cumulative comparison
Cumulative warranty cost versus cumulative net covered claims and self-insurance reserve balance:
Cumulative warranty cost and covered claims by year
| Year |
Cumulative warranty cost |
Cumulative net claims |
Net warranty benefit |
HYSA reserve balance |
Sensitivity to covered repair visits
How your net payback changes across different numbers of covered repair shop visits:
Extended warranty payback across repair frequencies
| Covered visits |
Gross repair bills |
Net warranty payout |
Net warranty benefit |
Verdict |
How this calculator works
Dealership finance offices often pitch an extended warranty (officially a vehicle service contract) as a small addition to your monthly car payment. When you roll a $2,800 service contract into a 60-month auto loan at 7.5% APR, you pay an extra $566 in loan interest, raising the true cost to $3,366. This calculator compares that full cost against expected covered claims after per-visit deductibles and non-covered part exclusions, alongside what your money would earn in a dedicated high-yield savings repair reserve.
What to watch out for
Read whether a contract is exclusionary (covers everything except a short list of wear items like brake pads, tires, wiper blades, and batteries) or stated-component (covers only parts explicitly named). Also watch for overlapping coverage: a "7-year / 100,000-mile" manufacturer plan bought on a new car with a 3-year / 36,000-mile bumper-to-bumper and 5-year / 60,000-mile powertrain warranty provides only two to four years of incremental protection.
Frequently asked questions
Why do most drivers lose money on extended car warranties?
Dealer-sold vehicle service contracts typically include a 40% to 60% retail markup plus administrative overhead. Surveys by Consumer Reports show that the median buyer spends significantly more on the contract than they ever recover in covered repairs.
Can I negotiate the price of an extended car warranty?
Yes. You do not have to buy a vehicle service contract at the dealership where you buy the car, or even on the day of purchase. Credit unions and out-of-state franchised dealers frequently sell identical factory-backed exclusionary plans for 35% to 50% less than finance-office sticker prices.
What happens if I sell or total the car before the warranty expires?
Most vehicle service contracts allow you to cancel for a pro-rata refund of the unused time or mileage (minus a $25 to $75 cancellation fee) or transfer the remaining coverage to a private-party buyer to boost resale value.
Benchmark sources and dates
Starting assumptions are example benchmarks, not binding quotes. Change any input to match your own bills or offers.