Mercedes-Benz CLA45 AMG (C117) ECU tune

Fits 2014–2019 · Stage 1 and Stage 2 · Mail-in

$1,799

Front three-quarter view of a grey Mercedes-AMG CLA45 (C117) with orange accents parked on a cobbled street

Stage 1

430hp

400lb-ft

From 375 hp / 350 lb-ft stock

Stage
Horsepower+55 hp
375 hp factory430 hp tuned
Torque+50 lb-ft
350 lb-ft factory400 lb-ft tuned

Tuned figures are estimates; results vary.

Add-ons
  • You ship: your ECU, with your printed order confirmation
  • Turnaround: two business days from when your ECU arrives
  • Return shipping: paid by us

The car

About the Mercedes-Benz CLA45 AMG (C117)

The C117 was the first CLA, and the CLA45 its AMG model, sold in the US from 2014 to 2019 as a four-door coupe. AMG hand-builds its 2.0-liter turbocharged inline-four, which sits crosswise under the hood with the turbocharger at the front, and pairs it with a seven-speed AMG SPEEDSHIFT DCT dual-clutch gearbox and AMG Performance 4MATIC all-wheel drive.

Mercedes-Benz’s 2017 specifications give a 106.3-inch wheelbase, a curb weight of 3,457 pounds, 18-inch wheels with 235/40 tires at all four corners and 13.8-inch front brake discs. It estimates 0–60 mph at 4.1 seconds for the 2017–2019 cars, with top speed limited to 155 mph.

The second-generation car that followed for 2020, listed as CLA45 AMG (C118), changed the engine layout, added an eighth gear and gave the rear axle a way to direct torque to each wheel, so it has its own page.

Stage 1 is calibrated for the car as it left the factory and takes it from 375 hp and 350 lb-ft to 430 hp and 400 lb-ft on pump-grade fuel. Stage 2 is calibrated for supporting bolt-on modifications and high-octane fuel, for 450 hp and 425 lb-ft. The gearbox has its own controller and torque limits, so the optional TCU tune raises them to match, with sharper shifts and stronger clutch clamping.

More about Mercedes-Benz tuning

Figures & prices

Mercedes-Benz CLA45 AMG (C117) tune figures by year

Factory and tuned horsepower and torque from our catalog, with prices for each stage and add-on.

Model yearFactoryStage 1Stage 2Add-ons
2014–2019375 hp / 350 lb-ft430 hp / 400 lb-ft
$1,799
450 hp / 425 lb-ft
$1,799
TCU tune $2,399

Tuned figures are estimates, not guarantees. Actual results vary with the car’s condition and modifications, fuel quality and octane, temperature, altitude and the dyno used. See our Terms of Service.

How it works

Mail-in tuning, start to finish

  1. 01

    Order online

    Choose your year, stage and add-ons and check out securely.

  2. 02

    Ship your ECU

    Pack it with your printed order confirmation email and send it to our Phoenix shop.

  3. 03

    We calibrate it

    Within two business days of it arriving.

  4. 04

    We ship it back

    Return shipping is on us. Reinstall and drive.

How mail-in tuning worksECU shipping instructions

FAQ

CLA45 AMG (C117) tuning questions

More answers in our FAQ

Which years of the CLA45 AMG (C117) does this tune fit?

Our online catalog lists Stage 1 and Stage 2 tunes for 2014–2019 Mercedes-Benz CLA45 AMG (C117) models. Choose your year at the top of the page; the figures and prices are the same for every year.

Is my CLA45 a C117 or a C118?

Go by the model year and the grille. CLA45s from 2014 to 2019 are the C117, with a seven-speed dual-clutch gearbox and no vertical-louver AMG grille, while the C118 from 2020 wears that grille and has an eight-speed gearbox. The C118 is listed on its own page, CLA45 AMG (C118).

Was the C117 CLA sold as a CLA35?

No. The CLA35 arrived with the second-generation CLA for 2020 as a new entry point to the AMG range, so in the C117 years the CLA45 was the only AMG version of the car in the US. The CLA35 has its own page, CLA35 AMG (C118).

What is the difference between Stage 1 and Stage 2 on the CLA45 AMG (C117)?

Stage 1 is calibrated for the car as it left the factory and runs on pump-grade fuel. Stage 2 pairs the calibration with supporting bolt-on modifications such as downpipes and runs on high-octane fuel. On a 2019 car, Stage 1 takes it from 375 hp to 430 hp. Stage 2 takes it to 450 hp.

Do I need a TCU tune for the CLA45 AMG (C117)?

A TCU tune is available as an add-on ($2,399). It raises the transmission’s torque limits and sharpens the shifts so the gearbox can handle the extra power. Ship your TCU in the same box as your ECU.

More Mercedes-Benz tunes

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Contact

Talk to our tuning shop

Customers across the US order online and mail us their ECU. Our shop is at 952 W Melinda Ln, Suite D in north Phoenix (Deer Valley, 85027), and local owners are welcome to bring their car in. Call, visit or send us an inquiry.

HOURS Mon - Fri: 8AM - 5PM
Sat & Sun: Closed

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