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How much is a 120000 mile tune up?

For most cars, a 120,000-mile tune-up typically costs between $300 and $900, depending on the vehicle, location, and whether major components like spark plugs and timing belts are due. In some cases, especially with premium or diesel engines, prices can be higher.


At the 120,000-mile mark, maintenance needs vary widely by make, model, and driving history. This article explains what a typical 120k tune-up covers, how pricing breaks down across common components, and practical tips to manage costs while keeping your vehicle reliable.


What a 120,000-Mile Tune-Up Typically Includes


Below is a look at the components and checks commonly included in a 120,000-mile service. Exact items depend on your car’s manufacturer schedule, whether the engine uses a timing belt or chain, and the vehicle’s overall condition.



  • Spark plugs replacement (and related ignition components if needed)

  • Ignition coils or packs replacement where specified by the manufacturer

  • Air filter replacement

  • Cabin air filter replacement

  • Fuel filter replacement (if applicable to your vehicle)

  • PCV valve replacement (Positive Crankcase Ventilation)

  • Belts and hoses inspection or replacement (serpentine belt, etc.)

  • Fluids and filters service: engine oil and filter, transmission fluid, coolant, brake fluid, and power-steering fluid as needed

  • Fuel system care: injector cleaning or fuel system additive treatment

  • Battery test and charging system check (and replacement if needed)

  • Timing belt replacement (if your engine relies on a belt, not a chain) or timing chain inspection as applicable

  • Diagnostic check for any codes or performance issues and overall inspection


As a general rule, some models may skip certain items or replace only what is due per the official maintenance schedule. Always compare a written maintenance plan from the shop to your owner’s manual to avoid unnecessary work.


Price Range for a 120,000-Mile Tune-Up


Prices vary based on car type, parts quality, and labor rates in your area. The ranges below reflect typical costs you might encounter for a comprehensive 120k service on many gasoline-powered vehicles.



  • Spark plugs and ignition system: approximately $150–$700 total, depending on engine type and whether coil packs are replaced

  • Belts and hoses: about $100–$450, including parts and labor for belts and related hoses

  • Air filter, cabin filter, PCV valve: roughly $40–$150 for parts and labor

  • Fluids and filters (oil change plus transmission, coolant, and others as needed): typically $100–$400

  • Fuel system cleaning or injector service: $50–$200

  • Battery and electrical checks: $60–$200 for battery replacement if needed

  • Timing belt replacement (if applicable): commonly $500–$1,200 or more, depending on engine complexity and labor

  • Labor and diagnostic fees: labor often billed by the hour, with typical shop rates around $75–$150+, potentially totaling $150–$600 for the service


Note that the total for a 120,000-mile tune-up can be lower if your vehicle’s schedule calls for fewer items, or higher if your engine requires more extensive work (for example, high-performance or European models often command higher labor rates and parts costs). Always obtain a detailed written estimate before authorizing work.


How to Save Money on a 120k Tune-Up


Prices can add up quickly, but there are practical ways to manage costs without sacrificing safety or reliability. The list below outlines strategies to maximize value.



  • Get multiple written quotes from independent shops and dealers to compare pricing and recommendations

  • Ask for a maintenance checklist tailored to your vehicle’s exact make/model and miles, and stick to it unless a component is visibly deteriorated

  • Combine services when possible (for example, replace filters during an oil change to minimize extra labor)

  • Consider OEM or manufacturer-approved parts for critical components, but evaluate generic equivalents for non-critical items to save money

  • Prioritize due items: if timing belt replacement is due, include it in the plan; if a component isn’t due yet, you can schedule that work for a later date

  • Ask the shop to break out labor hours and parts so you can see where costs are coming from

  • Look for coupons, loyalty programs, or pricing on bundled maintenance services

  • On older vehicles, consider a reputable independent shop rather than a dealership for typically lower labor rates


By planning ahead and verifying the scope of work, you can avoid paying for unnecessary items while ensuring your car remains dependable beyond 120,000 miles.


Summary


A 120,000-mile tune-up generally ranges from about $300 to $900, influenced by the car’s make, model, and the specific tasks due at that interval. Common items include spark plugs, filters, belts, fluids, and system inspections, with mileage-sensitive work like timing belt replacement potentially driving up the price. To get the best value, gather multiple estimates, follow the vehicle’s official maintenance schedule, and focus on required items while planning any optional enhancements for the future. A well-executed 120k service can extend engine life and prevent costly repairs down the road.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.