What to Look For When Buying a Used Car

• The four things that decide a good used-car buy: documented service history, a clean or clearly explained title, how the climate the car lived in aged it, and an asking price that matches the local market.
• Mileage is the least important number on a window sticker. Records beat a low odometer.
• Budget past the sticker. In Mesa, a dealer sale carries 8.3% transaction privilege tax (5.60% state, 0.7% Maricopa County, 2% city), plus roughly $13.50 in state title and registration fees and a separate annual vehicle license tax.
• Most Phoenix-area (ADEQ Area A) addresses require a passing emissions test to register, and ADEQ lists the test at $12.25 to $23.75.
• Phoenix summers are the real stress test, with a normal July high of 106.5°F. Cooling, air conditioning and interior materials matter more here than almost anywhere.
• Before you leave a deposit, confirm the seller is a licensed Arizona dealer using ADOT's Valid Dealer Report.

Price is the smallest part of what a used car costs you in Arizona. Start with the number on the car, then add what the state adds. A sale from a licensed dealer in Mesa carries 8.3% transaction privilege tax: 5.60% to the state, 0.7% to Maricopa County, and 2% to the city. On top of that sit the state title and registration fees, roughly $13.50 at the counter, and the annual vehicle license tax. Arizona assesses the vehicle license tax on 60% of the manufacturer's base retail price, then reduces that assessed value by 16.25% for each year since the car was first registered, and applies $2.80 per $100 for a new vehicle or $2.89 per $100 for a used one. You can run your own number on our Arizona VLT calculator before you shop.

Then budget the things nobody prints on a window sticker: insurance, which a lender will require at full coverage if you finance, and the repair risk that comes with the climate. In a Phoenix summer the single most expensive surprise on a used car is the air conditioning, because a compressor and condenser job can run into four figures and, on an inexpensive car, approach what the car is worth. Decide your all-in number first, then shop to it. We post one set price on every car, so the figure you see is the figure you work from, with no back-and-forth to reverse-engineer. If you are weighing monthly payments, our financing page and the cars on our Mesa used-car lot are the place to start.

A vehicle history report is the fastest way to turn a stranger's car into a known quantity. Pull one and read it for four things: the title history, the odometer trail, the number and location of owners, and the service and accident records. Carfax and AutoCheck are the two main providers, and they do not always agree, because each pulls from different data feeds. At AZ Auto Gallery we put a vehicle history report on the cars we list, so you can read it before you drive over.

The most important line on the report is the title. A clean title is the baseline. A branded title, salvage, rebuilt, flood, lemon or hail, is not automatically a dealbreaker, but it changes the value, the insurability and your resale down the road, so it has to be priced in and explained. If a report shows a brand, read our guide to Arizona salvage and rebuilt titles before you decide. A report is not proof of a clean car, though. Damage that was paid out of pocket, an accident the owner never reported, or a flood car title-washed through a permissive state can all read clean. That is why you still run a free VIN check, look the car over yourself, and, for flood specifically, follow the physical checks in how to spot flood damage.

Arizona does not rust cars, it bakes them. With a normal July high of 106.5°F in Phoenix and triple-digit heat on roughly 111 days in an average year, the failures here are thermal, not corrosive, and four systems take the brunt.

The air conditioning goes first and costs the most. In sustained heat the compressor runs closer to continuous, and the condenser, which sits at the front of the car and has to dump cabin heat into already-hot outside air, works at the edge of its capacity. Bearings, the compressor clutch and the seals wear faster, and a failed compressor can send metal debris through the whole system. Check that the vents blow genuinely cold, not just cool, on a hot day.

The cooling system is next. Coolant runs hotter and at higher pressure here, which fatigues the water pump seal, the radiator end tanks, the hoses and the thermostat. An engine that runs warm in traffic in May will overheat in July. Then come the rubber and plastic parts: serpentine belts crack, coolant and vacuum hoses harden and split, and tires age out of their sidewalls before the tread is gone. Finally, the interior. Ultraviolet load and heat break down dashboards, trim and seat materials, which is why a cracked dash top or a sticky, degraded soft-touch surface tells you how the car was stored. A car that lived in a garage reads years younger than one that baked in an open lot.

There is an upside to the dry climate, and it is the reason out-of-state buyers come here: no road salt means Arizona-kept cars stay rust-free underneath. The flip side is the first thing to check on any car that spent its life in a snowbelt state, where the undercarriage, brake and fuel lines and frame can hide salt corrosion. To choose a car built to survive the heat, see the best used cars for Arizona heat.

Before you think about a specific car, confirm the seller is who they say they are. In Arizona every retail car dealer is licensed by the Motor Vehicle Division at ADOT, and you can check a dealer against ADOT's Valid Dealer Report, a list the agency publishes and updates through the week. A licensed dealer is bound by title, disclosure and consumer rules that someone posing as a private seller is not. That verification takes two minutes and it is the cheapest insurance in the whole process.

Then read the reputation, not just the rating. On the Better Business Bureau, skip straight to the complaint history and, more importantly, how the business answered it, because a resolved complaint says more than a spotless record. On Google, read the review distribution rather than the headline number: open the one and two-star reviews first to see what the unhappy customers actually say, check whether the owner responds and how, and look at how recent and how steady the reviews are. A wall of five-star reviews posted in a single week is a worse sign than a strong average with a handful of honest, answered complaints. The dealers worth buying from tend to be transparent in the same way: a posted one-price model, history reports on the cars, and plain answers to hard questions beat a moving target every time.

Most of what separates a good Phoenix-area listing from a bad one is visible before you ever call. Use this as a quick scan.

A single red flag is a question, not a verdict. Two or three together is your cue to walk.

The odometer is the number buyers fixate on and the one that should move the needle least. Mileage tells you how far a car has gone, not how well it was cared for, and in Arizona a garaged, serviced car with 120,000 documented miles is a better buy than a neglected one with 70,000 and no paperwork. Engines and transmissions last longer on consistent maintenance than on a low number, and a verified service history is worth more than a tidy odometer reading. Read the records first, and let the mileage inform the price rather than decide the purchase.

Price deserves the same discipline. A fair used-car price is the one the local market is actually paying for the same year, trim, mileage and condition, not the highest or the lowest listing you can find. Pull up comparable cars in the Phoenix area, note how long each has sat, and treat a price far under the pack as a reason to ask what is wrong, not a reason to rush. We price each car once, at the market, so there is no haggling theater and no reward for the pushiest buyer. Match the asking price to the market and the service history to the miles, and you have checked the two numbers that actually decide the deal. Start with the cars on our Mesa lot or the homepage.