Oil Change Cost: Conventional vs. Synthetic Price Breakdown
Quick answer
A conventional oil change averaged $38 and a synthetic oil change averaged $70 at AAA-surveyed shops, per 2017 AAA data. Those figures are now several years old, so treat them as a starting baseline — your actual price will vary by oil type, shop, and location. DIY parts alone ran about $28 for conventional and $45 for synthetic (5 quarts).
What AAA Found About Oil Change Prices
The most widely cited published benchmark comes from a 2017 AAA survey of its Approved Auto Repair facilities. At those shops, a conventional oil change averaged $38 and a full-synthetic oil change averaged $70. Synthetic oil changes cost noticeably more per visit.
Because this data is from 2017, it should be treated as a floor, not a current quote. Inflation and regional labor costs mean prices at your local shop today are likely higher. Always ask for a written estimate before authorizing work.
If you prefer to do it yourself, the same AAA survey put the parts-only cost at roughly $28 for 5 quarts of conventional oil and $45 for 5 quarts of synthetic. You still need a new filter, which adds a few dollars, plus proper disposal of the used oil.
Annual Cost Difference: Conventional vs. Synthetic
AAA calculated that switching from conventional to synthetic costs the average driver about $64 more per year. That works out to roughly $5.33 per month, based on a factory-recommended change schedule. Whether that premium is worth it depends on your vehicle and driving habits — more on that below.
Choosing Between Conventional and Synthetic
AAA’s independent testing found synthetic oil outperformed conventional oil by an average of nearly 50 percent across several industry-standard tests. Those tests measured things like shear stability, deposit formation, cold-temperature pumpability, and oxidation resistance. AAA recommends synthetic for vehicles with turbocharged engines and for drivers who deal with stop-and-go traffic, towing, or extreme temperatures.
That said, a manufacturer-approved conventional oil will not harm an engine that does not require synthetic. Check your owner’s manual first — it will tell you exactly which oil grade and type your engine needs. Using the wrong grade has a real cost beyond engine wear: the U.S. Department of Energy notes that using the wrong viscosity (for example, 10W-30 in an engine designed for 5W-30) can lower fuel economy by 1–2%. Over thousands of miles, that adds up at the pump. Look for the “Energy Conserving” label on the API symbol to confirm friction-reducing additives are present.
For more on how your driving patterns affect service needs, see what severe driving conditions mean for your maintenance schedule.
How Shops Bill for an Oil Change
Shops use one of two billing methods, according to consumer guidance on auto repair:
- Flat-rate labor: The shop charges a set amount based on a published estimate of how long the job takes, regardless of actual time spent.
- Time-and-materials: You pay for the actual hours the technician worked, plus parts.
An oil change is a short job, so labor is usually a small portion of the total bill. The bigger variable is the oil itself — synthetic costs more than conventional, and some vehicles need more than 5 quarts. Shops may also add a small fee for shop supplies or used-oil disposal.
Reading Your Estimate — What to Check
Consumer auto repair guidance says a written estimate should clearly identify the condition being addressed, the parts needed, and the anticipated labor charge. Ask for a signed copy before work begins. For an oil change, the estimate should list:
- Oil type and quantity (e.g., 5W-30 full synthetic, 5 quarts)
- Filter part number or description
- Labor charge (flat-rate or hourly)
- Any shop supply or disposal fees
If a shop recommends extra services at the same visit — such as an air filter, cabin filter, or transmission flush — you have the right to ask why each one is needed. You can compare those recommendations against your owner’s manual schedule. Some shops suggest more frequent service than the manufacturer actually requires.
Note: quote sites and shop chains that provide online estimates may have a sales interest in the services they recommend. Getting a written itemized estimate from the shop itself, before work starts, is the most reliable check.
What Happens If You Skip an Oil Change
Skipping routine maintenance like oil changes can lead to poor fuel economy, unreliability, or costly breakdowns. It may also void your warranty. Engine oil lubricates moving parts and carries heat away from the engine. Old, degraded oil loses its ability to do both. That can speed up wear on internal parts, and fixing that damage costs far more than regular oil changes.
Frequently asked questions
Does synthetic oil really last longer between changes?
AAA's research found synthetic oil resists deterioration significantly better than conventional oil. That is why many manufacturers allow longer intervals for synthetic. Your owner's manual sets the right interval for your specific engine. Follow that schedule rather than a generic mileage rule, since intervals vary widely by vehicle.
Is it cheaper to change my own oil?
Based on 2017 AAA data, DIY parts cost about $28 for conventional oil (5 quarts) or $45 for synthetic, versus shop averages of $38 and $70 respectively. You save roughly $10–$25 per change, but you also need a filter, drain pan, and a way to dispose of used oil legally — many auto parts stores accept it for free.
Does using the wrong oil grade hurt fuel economy?
Yes. The U.S. Department of Energy states that using a heavier viscosity than your engine requires — for example, 10W-30 in an engine designed for 5W-30 — can reduce fuel economy by 1–2%. Over a year of driving, that adds a measurable cost at the pump on top of any extra engine wear.
What should I do if a shop recommends extra services during an oil change?
Compare any recommended service against your owner's manual maintenance schedule. Ask the shop to explain in writing why the service is needed now. Some shops schedule services more frequently than the manufacturer requires. You are not obligated to approve additional work, and you can always get a second opinion.
Can skipping oil changes void my car's warranty?
Consumer auto repair guidance says neglecting routine maintenance — including oil changes — can invalidate your warranty. Keep dated receipts or records of every oil change, whether done at a shop or at home. That way you can show the vehicle was maintained on schedule if a warranty claim comes up.
Sources
- AAA Spills the Truth on Oil Changes – AAA Newsroom · newsroom.aaa.com
- Auto Repair Basics · Consumer Advice (consumer.ftc.gov)
- Gas Mileage Tips - Vehicle Maintenance · fueleconomy.gov
Prepared from these references and checked against them. References retrieved October 11, 2026.
Spotted an error? Tell us what needs correcting.