Doing the Arithmetic
Here is the part that decides whether certified is worth the extra money on a particular car.
A note on counting before the examples. Everything below is measured in years since the car was first sold, which is
what the warranties actually run on. That is not the same as the model year on the listing, and the two can differ by
the best part of a year, so treat these as the shape of the answer rather than as your car's answer. The first two
examples also assume a car that stayed under 50,000 miles for its first four years. The third covers what changes when
it did not.
Same badge. Very different purchase.
Notice what happened there: on a low-mileage car, six years from first sale is the four-year original warranty plus
the two years of certified coverage that follow it. By the time a car reaches the far end of what can be certified,
that second warranty is at or near its end. The older the certified car, the more of its coverage is behind it rather
than ahead of it.
Now the case the examples above set aside: the original warranty ends at 4 years or 50,000 miles, whichever the car
reaches first. Take a certified car five years past its first sale that has been driven about 15,000 miles a year. It
passed 50,000 miles at roughly three years and four months, so its original warranty ended there rather than at four
years, and its two years of certified coverage on everything else ran from that point to about year five. It is ending
now, a year sooner than the age alone would suggest. Its powertrain coverage still has around two years to go, and its
odometer is somewhere near 75,000 against the 100,000 ceiling.
So on a harder-driven car, mileage rather than age is what sets both dates. This is why the answer cannot be read off
the badge, and why the four questions at the end of this page are worth asking.
None of this makes an older certified car a bad buy. It has still passed the 182-point inspection, and its powertrain
coverage runs to seven years from first sale, where an uncertified Acura of the same age has only the factory's 6
years or 70,000 miles, which by then has usually run out. It does mean the extra money should look different to you at
six model years than at two. Ask us what the gap is on the specific car and what is actually left on it.