Yes — Monte fits the Mercedes AMG CLS53 3.0L L6 Turbo. It covers every year of this engine we list: 2019–2021.
The 2020 Mercedes AMG CLS53 with the 3.0L L6 Turbo makes 429 hp and 384 lb-ft from the factory. With Monte we estimate up to 463 hp and 422 lb-ft.
Both carry the same calibration for this engine. 30-day money back, lifetime warranty on defects, free shipping.
* “With Monte” figures are estimates calculated from manufacturer ratings, not measurements. Results vary by vehicle, engine condition, fuel, climate and driving; individual results may be lower.
Car manufacturers often use restrained tuning settings for your engine. Monte unlocks what’s already there.
More power and efficiency.
No tools, no wiring, no ECU flashing. Pull it out and the car is exactly as it left the factory.
Works with OBD-II cars — US 1996 and newer, EU 2001 and newer.
TunedStock
Stronger mid-range for merging onto the highway.
According to the Federal Highway Administration (FHWA), the average American drives approximately 13,500 miles per year. This figure varies based on factors such as age, gender, and geographic location. This equates to roughly 1,125 miles per month, which was used as the basis for estimation.
Parameters:
Disclaimer: Monte GT and Monte GTR fuel economy improvements are subject to various factors and may differ based on driving habits, fuel type, weather conditions, and vehicle condition. Actual fuel savings and mileage may vary
Monte GTR reads Check Engine codes, tells you what they mean and clears them — right on its screen. No separate scanner needed.
Built into Monte GTR
Tires, intake, a tune — run it, change it, run it again.
See how it worksEvery power figure here comes from a chassis dyno run you can watch or read. Where there was no dyno, we say so.
Ford F-150 Raptor3.5 EcoBoost · 2019 · GT / GTR
+21hp+31lb-ft
SEMA GarageLab test · Diamond Bar, CA
3.5 EcoBoost · 2019 · GT / GTR
SEMA GarageRace II, fifth gear, each trace the average of three separate dyno runs. Best gain 21 hp and 31 lb-ft, both 8%, at 51 mph. Measured at SEMA Garage, September 2023.
Nissan 370Z3.7 V6 · 2014 · Monte GT / GTR
+22.3hp+16.8lb-ft
CircuiTek · New TaipeiDynocom customer dyno report
3.7 V6 · 2014 · Monte GT / GTR
CircuiTek · New Taipei325.6 → 347.9 hp, stock and fitted back to back on the same dyno. The car runs an aftermarket exhaust (mid and rear section). Our own test.
Mercedes C3002.0 turbo · Monte GT / GTR
+25.1hp+72.2lb-ft
Car News · YouTubeDyno on video
2.0 turbo · Monte GT / GTR
Car News · YouTubeFilmed before and after on the same dyno
Ford Taurus3.5 EcoBoost · GT / GTR
18→22mpgCity · owner’s estimate
Taurus owner · USOwner video · no dyno
3.5 EcoBoost · GT / GTR
Taurus owner · USThis owner filmed his own Monte GT review on the road — a drive, not a dyno run. He reports his city average went from about 18 to about 22 mpg. His own figures, not a measured test.
Abarth 5951.4 T-Jet · Monte GT / GTR
+20.6hp+13.7lb-ft
Abarth owner · UKDyno on video
1.4 T-Jet · Monte GT / GTR
Abarth owner · UKTwo runs in one session on a certified insoric system — stock first, then with Monte. August 3, 2020, 63 °F, 28.6 inHg, third gear, corrected to ECE 80/1269.
Mazda MX-52.0 · Monte GT / GTR
+16.6hp+17.1lb-ft
CircuiTek · New TaipeiDynocom customer dyno report
2.0 · Monte GT / GTR
CircuiTek · New TaipeiBest gain, both 11.8%, at 5100 rpm: 140.5 → 157.1 hp and 144.7 → 161.8 lb-ft. Peak to peak the same run reads 156.2 → 163.4 hp. Corrected to SAE J1349.
Three ways to change how an engine responds — what each one involves, and what it costs you later.
Six points buyers ask us about most — not every way to compare.
Flash and piggyback figures are typical market ranges, not our measurements, so the saving is the arithmetic on those ranges against the $279 Monte GT — not a quote. Monte figures come from dyno tests — see Real Results.
Canada · Sport 2 mode
“the sport 2 mode is a lot of fun”
Kia Stinger GT
“about 20 hp” · owner’s estimate
Amazon.ca buyer
“very simple to set up”
Amazon.ca buyer
“a little more get up and go”
1997 Mazda B2300
“Definitely gave it a boost”
Results as reported by the owners. Experiences vary by vehicle, driving conditions, and selected mode.
“Noticed a huge improvement in acceleration, negligable increase in feel consumption.”
Halfway through the calibrating for Sport 2 mode, pretty satisfied so far. Noticed a huge improvement in acceleration, negligable increase in feel consumption. Haven't tried feel saver yet, good chance I may never try it as the sport 2 mode is a lot of fun and had way less negative impact on feul than I anticipated
“A gain of about 20 hp on a Kia Stinger GT.”
Translated from French
I tried this chip without any expectations. A gain of about 20 hp on a Kia Stinger GT. Power comes in faster, with a better kick on gear changes. I noticed the difference after about 50 km... I finished the 200 km on Race Max and I'm very satisfied. I recommend it.
Original: J'ai tenté l'essaie de cette chip, sans avoir aucune attente. Un gain d'environ 20hp pour un kia stinger gt. Puissance arrive plus vite et meilleur kick lors de changement de vitesse. J'ai remarqué la différence après environ 50 km... j'ai terminer les 200km à race max et très satisfait. Je recommande
“clear instructions to walk you through the 5 minute setup.”
this is a great product to add performance and most importantly increases your fuel milage. very simple to set up and calibrate. clear instructions to walk you through the 5 minute setup. they have a good customer service as well. i spoke with Eugene and he was very helpful.
“This tuning chip has made a very nice and definitely noticeable difference in the throttle response as well as top end before gear changes, plus an almost 40 more ponies to play with!!!!”
This tuning chip has made a very nice and definitely noticeable difference in the throttle response as well as top end before gear changes, plus an almost 40 more ponies to play with!!!! I would definitely recommend this if you’re looking for a little more get up and go at a reasonable price! I haven’t tried the gas saving feature yet so I’ll come back to you in a few months when the weather gets colder. I’m just enjoying the extra get up and go right now while the weather is nice. Setup was also very easy and went without a problem.
“Definitely shocked with the difference it made in the truck, used in my 1997 Mazda b2300.”
Definitely shocked with the difference it made in the truck, used in my 1997 Mazda b2300. Definitely gave it a boost
Designed in the USA · Ships from Little Rock, Arkansas
Tuning, diagnostics and testing on one screen.
Subject to eligibility and approval. Payment options may vary
Free shipping. Worldwide from Little Rock, Arkansas.
30 days to try it. Not the right fit? Full refund.
Lifetime warranty. Covered for the life of the product.
The answer is already in the catalogue — no need to write to us and wait for a reply.
Prefer picking? Choose from the list
The calibration is already written — it goes into the device before it ships.
You already have a car saved — tell us which one is yours.
!This page is about the Mercedes AMG CLS53. It fits too — but the device is written for one car.
Picking the Mercedes AMG CLS53 replaces the saved car.
Other Mercedes models
Monte Tuning is compatible with Mercedes AMG CLS53 3.0L L6 Turbo 2020 3.0L L6 Turbo 2020
Monte plugs into the OBD-II port and carries a calibration for your engine. It changes fuel delivery and ignition timing values in the engine computer’s temporary memory, at up to 256 load points, and does not rewrite its permanent memory. Unplug it and the car is back to stock.
The calculator above shows the factory figures for the 3.0L L6 Turbo and our estimate with Monte. Estimates are not a measurement of your car: fuel quality, altitude and the condition of the engine all move the result.
Both carry the same calibration. The GT is controlled from the Monte app on your phone. The GTR has its own touch screen with live gauges, a fault-code scanner, a 0–60 timer and a virtual dyno. Both have an Eco mode for mileage, and both move with you to your next car.
Ask about fitment, install, your order or warranty. Include your car’s year, make, model and engine for an exact answer.
Real people, not a bot. We usually reply within minutes during the day.
For a fast answer, include your car (year, make, model, engine) and your order number if you have one.
If you leave the site, the reply comes to
