How long does a transmission flush take?

A transmission flush takes 45–75 minutes at most shops. Adding filter and pan gasket replacement extends the service to 60–90 minutes.

Will a transmission flush fix slipping?

A flush may help if slipping is caused by degraded fluid. It will not fix mechanical wear, a failed solenoid, or valve body damage. If slipping continues after a fluid service, a proper transmission diagnosis is needed.

Is a transmission flush covered by extended warranty?

Transmission flushes are maintenance items and are generally not covered by extended warranties. However, some powertrain warranties require documentation of regular fluid services to remain valid — check your warranty terms.

Updated April 2026

Transmission Flush Cost: What Shops Charge in 2026 (And Is It Worth It?)

Q: How much does a transmission flush cost?

A transmission flush costs $125–$400 at most shops. Jiffy Lube charges $125–$250; Valvoline charges $175–$350; dealerships charge $200–$475. Adding a filter and pan gasket replacement brings the total to $230–$475.

Q: Is a transmission flush necessary?

A flush is not always necessary — and for high-mileage transmissions that haven't been regularly serviced, it can cause more harm than good. Most mechanics recommend a drain-and-fill for neglected transmissions and reserve full flushes for regularly maintained vehicles.

Quick Answer

$125–$400

Standard Flush

$230–$475

Flush + Filter/Pan

$200–$475

At Dealership

$80–$250

Drain & Fill (alt.)

A flush replaces 90–100% of old fluid using a machine. A drain-and-fill replaces 30–40%. The flush costs more — but isn't always the right choice. See our verdict below.

Transmission Flush Prices by Provider (2026)

National average price ranges. Prices vary by location — always check local pricing before booking. Column "Includes Filter" notes whether a filter and pan gasket replacement is included.

Provider	Flush Price Range	Includes Filter?	CVT Flush Available?	Notes
Jiffy Lube	$125–$250	Extra $30–$80	Yes, +$20–$50	Prices vary widely by franchise location
Valvoline Instant OC	$175–$350	Extra $30–$80	Yes	Consistent service quality; multiple fluid types stocked
Midas	$150–$280	Often included	Location dependent	Franchise model; call ahead to confirm current price
Firestone	$150–$300	Often included	Yes	Full-service shop; more thorough pre-service inspection
Pep Boys	$140–$290	Extra $25–$60	Yes	Competitive pricing; combined parts + service retailer
Independent Shop	$100–$280	Extra $20–$60	Yes (with correct fluid)	Best value; quality varies — use Google reviews and ASE cert
Dealership	$200–$475	Often included	Yes, OEM fluid	OEM fluid guaranteed; highest cost; recommended for new cars under warranty

Flush vs drain-and-fill price gap: Shops charge more for a flush because it requires a machine (costing $3,000–$8,000), more fluid (12–22 quarts vs 5–7 for drain-and-fill), and longer service time. The higher price is legitimate — but the flush isn't always the right service.

What Does a Transmission Flush Actually Involve?

A machine flush is fundamentally different from the drain-and-fill that most shops do. Understanding the difference helps you decide which service you actually need.

Drain & Fill — What You Usually Get

Drain plug removed; pan drained by gravity
5–7 quarts of old fluid removed (30–40% of total)
New fluid added through dipstick tube or fill hole
No machine required — DIY-accessible

$80–$250 · 30–45 min

Machine Flush — The Complete Service

Flush machine connected to transmission cooler lines
New fluid pumped in; old fluid pushed out simultaneously
12–22 quarts of fluid cycled through the system
90–100% of old fluid replaced
Some shops then also drop pan and replace filter

$125–$400 · 45–75 min

Why does a flush use 12–22 quarts when my transmission only holds 10? The machine simultaneously pumps new fluid in while the old fluid is being pushed out through the cooler lines. To ensure 90%+ replacement, you need nearly double the capacity in total fluid volume. The extra fluid is not all in the transmission at once — it's being exchanged continuously.

The Controversy: Should You Flush a High-Mileage Transmission?

This is the question most sites dodge. Here's the honest, evidence-based answer — including why experienced mechanics disagree.

Against Flushing Old Transmissions

Old, degraded fluid has suspended sludge and debris that settles over time
A flush stirs this up — particles may block the filter or solenoids
Fresh synthetic fluid can expand seals designed for older, thicker fluid
Many transmission failures occur shortly after a first-time flush at 100k+ miles
The transmission "runs on its gunk" — disrupting it causes failure

In Favour of Machine Flush

Removes 3× more old fluid than a drain-and-fill
Old fluid increases operating temperature and friction wear
If the transmission is healthy, more fresh fluid is strictly better
Modern flush machines use no harsh solvents — just new fluid pushing out old
Regular maintenance prevents the sludge problem from developing

The consensus verdict: Get a drain-and-fill if the transmission hasn't been serviced in 80,000+ miles or this is the first service. Get a full flush if the transmission has been regularly serviced and you're doing a planned maintenance interval. The risk of a flush on a well-maintained transmission is low; the risk on a neglected one is real.

Use our interactive decision tool to find out which service your car needs →

Is a Transmission Flush Worth the Extra Cost?

A flush costs $50–$150 more than a drain-and-fill. Here's a simple cost-benefit breakdown.

Scenario	Drain & Fill	Full Flush	Recommended
Car under 60k miles, well-maintained	$80–$200	$125–$350	Either
Car at 60–100k miles, regularly serviced	$80–$200	$125–$350	Flush
Car over 100k miles, irregular service history	$80–$200	$125–$350	Drain & Fill
First service ever on high-mileage car	$80–$200	$125–$350	Drain & Fill ONLY
CVT transmission, any age	$150–$400	$200–$475	Drain & Fill
Heavy towing/severe duty vehicle	$80–$200	$125–$350	Flush

Frequently Asked Questions

How much does a transmission flush cost?

A transmission flush costs $125–$400 at most shops. Add filter and pan gasket replacement and the total rises to $230–$475. Jiffy Lube charges $125–$250; Valvoline $175–$350; dealerships $200–$475.

Is a transmission flush necessary?

Not always. A drain-and-fill is sufficient for most vehicles. Get a full flush only if your transmission has been regularly serviced and you're doing a planned interval service. Never flush a transmission that hasn't been serviced in 100,000+ miles.

How long does a flush take?

A machine flush takes 45–75 minutes. Adding filter and gasket work extends it to 60–90 minutes. Budget 1.5 hours total if you're also getting a filter replacement.

Will a flush fix my slipping transmission?

Fresh fluid can help if slipping is caused by degraded fluid. It won't fix mechanical wear, solenoid failure, or valve body problems. If slipping continues after a fluid service, get a proper transmission diagnosis.

How often should I get a transmission flush?

If you choose flush services over drain-and-fill, every 60,000–80,000 miles is a reasonable interval for most automatic transmissions. CVTs should be serviced every 30,000–40,000 miles, but drain-and-fill is usually the preferred method for CVTs.