Mercedes-Benz CLA35 AMG (C118) ECU tune

Fits 2020–2024 · Stage 1 and Stage 2 · Mail-in

$1,799

Front three-quarter view of a grey Mercedes-AMG CLA35 (C118) in a parking lot

Stage 1

365hp

368lb-ft

From 302 hp / 295 lb-ft stock

Stage
Horsepower+63 hp
302 hp factory365 hp tuned
Torque+73 lb-ft
295 lb-ft factory368 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 CLA35 AMG (C118)

Mercedes-AMG called the CLA35 the latest point of entry to its range when the second-generation CLA arrived for 2020. It keeps the CLA’s frameless doors and low roofline and adds a twin-louver grille, an AMG front bumper with flics, 18-inch wheels and a round tailpipe at each side of the rear bumper, and it sits below the CLA45 in the same body.

Its 2.0-liter four-cylinder is derived from the M260 of the A-Class and mounted crosswise, with a twin-scroll turbocharger whose divided housing keeps the exhaust pulses apart for quicker response, plus CAMTRONIC valve control and a die-cast aluminum crankcase. A seven-speed AMG SPEEDSHIFT DCT dual-clutch gearbox feeds a variable all-wheel-drive system that ranges from front-wheel drive only to an even 50:50 split.

Mercedes-Benz estimates 0–60 mph at 4.8 seconds and limits the car to 155 mph. From the 2024 update the EPA lists the CLA35 with an eight-speed dual-clutch gearbox in place of the seven-speed.

Stage 1 is calibrated for the car as it left the factory and takes it from 302 hp and 295 lb-ft to 365 hp and 368 lb-ft on pump-grade fuel. Stage 2 is calibrated for supporting bolt-on modifications and high-octane fuel, for 380 hp and 380 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 CLA35 AMG (C118) 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
2020–2024302 hp / 295 lb-ft365 hp / 368 lb-ft
$1,799
380 hp / 380 lb-ft
$1,799
TCU tune $2,399
CPC tune $2,999

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

CLA35 AMG (C118) tuning questions

More answers in our FAQ

Which years of the CLA35 AMG (C118) does this tune fit?

Our online catalog lists Stage 1 and Stage 2 tunes for 2020–2024 Mercedes-Benz CLA35 AMG (C118) models. Choose your year at the top of the page; the figures and prices are the same for every year.

How can I tell a CLA35 from a CLA45 at a glance?

The CLA35 has a twin-louver grille, 18-inch wheels as standard and one round tailpipe on each side. The CLA45 from 2020 wears the AMG grille with twelve vertical louvers, standard 19-inch wheels and a pair of round twin tailpipes. The CLA45 has its own page, CLA45 AMG (C118).

What is mechanically different between the CLA35 and the CLA45?

The CLA45’s M139 engine, built by one technician, is turned 180 degrees so its turbocharger sits at the back next to the firewall, and it uses an eight-speed dual-clutch gearbox and a rear axle that can send torque to each rear wheel separately. The CLA35 keeps the regular crosswise layout and an all-wheel-drive system that varies torque only between the axles.

What is the difference between Stage 1 and Stage 2 on the CLA35 AMG (C118)?

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 2024 car, Stage 1 takes it from 302 hp to 365 hp. Stage 2 takes it to 380 hp.

Do I need a TCU tune for the CLA35 AMG (C118)?

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.

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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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