Do I need a fuel system cleaner?

Only if your manual says so. Hyundai recommends one bottle of additive every 8,000 miles when TOP TIER gasoline is not available, and Toyota lists an additive only in Hawaii, Puerto Rico and American Samoa.

Is fuel injector cleaning necessary?

Usually not. Fuel injector or fuel system cleaning isn't in the manufacturer schedules we checked. A car that runs fine doesn't need it; a fuel additive is listed only in special cases.

Typical national price: $100 to $250. Check your quote free

When manufacturers actually call for it

Fuel injector or fuel system cleaning does not appear in the Toyota, Ford, Mazda, Nissan or Subaru schedules checked here. The exception is a fuel additive: Hyundai recommends one bottle every 8,000 miles if TOP TIER gasoline is not available, and Toyota lists an additive only in Hawaii, Puerto Rico and American Samoa.

2023 Toyota Camry / Camry AWD: Add a fuel tank additive at each service only in Hawaii, Puerto Rico and American Samoa; no injector cleaning service is listed. Maker's schedule
2021 Nissan Rogue: Not listed: the schedule's fuel item is an inspection of fuel lines and connections; there is no cleaning service. Maker's schedule
2023 Mazda CX-5: Not listed: U.S. schedule only inspects fuel lines and hoses. Maker's schedule
2022 Hyundai Elantra: No injector cleaning; a fuel additive only if TOP TIER gasoline isn't available. Maker's schedule

What consumer guides say

If the car runs fine, fuel system services not in the maker's schedule are not needed. Consumer Reports
Kelley Blue Book: most vehicles do not need a fuel injector flush. Kelley Blue Book

What it typically costs

$100 to $250on-car fuel injector cleaning, professional, AutoNation Mobile Service: Average Fuel Injector Service Cost in 2025

National ranges; a dealer usually sits at the top. A quote a little over the range is normal. Well over it is worth a question.

Doing it yourself: A shop cleaning isn't recommended as a DIY job; a bottled additive is the only home option, and only if your manual calls for one.

What to ask at the counter

“Is fuel injector cleaning in my manufacturer's schedule, or is it a shop recommendation?”
“Is there a symptom or trouble code pointing to the injectors?”
“If my manual recommends a fuel additive, can I add it myself instead?”

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Frequently asked questions

Is fuel injector cleaning necessary?: Usually not. It is not in the Toyota, Mazda, Nissan or Subaru schedules checked here, and Consumer Reports says a car that runs fine does not need fuel system services the maker's schedule does not call for.
Do I need a fuel system cleaner?: Only if your manual says so. Hyundai recommends one bottle of additive every 8,000 miles when TOP TIER gasoline is not available, and Toyota lists an additive only in Hawaii, Puerto Rico and American Samoa.

Every service guide

Sources

ManufacturerToyota 2023 Camry / Camry AWD maintenance schedule
ManufacturerNissan 2021 Rogue maintenance schedule
ManufacturerMazda 2023 CX-5 maintenance schedule
ManufacturerHyundai 2022 Elantra Owner's Manual: Normal Maintenance Schedule
Price sourceConsumer Reports
Price sourceKelley Blue Book
Price sourceAutoNation Mobile Service: Average Fuel Injector Service Cost in 2025

Last reviewed September 27, 2026. Prices are national ranges, not quotes for your area; schedules vary by engine and model year, so check your own owner's manual.