MMA Platform (CLA EV) by Mercedes-Benz: status and timeline

MMA Platform (CLA EV)

Mercedes' Modular Architecture (MMA) is an electric-first platform debuting with the 2026 CLA EV. It features 800V charging, in-house MB.OS system, and supports four models.

DeployStage 4 of 5

CLA EV launched in 2026; GLA and GLB to follow on the 800V platform.

Updated Jan 2026Checked 10 Oct0 updates this week

Milestones

Next · 2026 CLA EV launches in market

MMA platform announced and showcased2023Complete.
CLA EV production beginsQ4 2025Complete.
2026 CLA EV launches in marketTarget 2026Current milestone.
GLA EV and GLB EV models enter productionTarget 2027Not yet reached.

Most important updates

Upcoming

20262026 CLA EV launches in market (next)
2027GLA EV and GLB EV models enter production

Current obstacles

Custom OS reliabilityBuilding an in-house OS is rare in automotive; any software fault affects millions of vehicles and brand trust, unlike partnered systems from suppliers.
Cost competitiveness800V systems and custom OS add engineering expense; the CLA must undercut Tesla Model 3 on price while commanding a premium for the Mercedes name.

Physics limits

Charging infrastructure maturity350 kW chargers are not widely available yet; the CLA's 320 kW capability outpaces real-world infrastructure in most markets, limiting the practical 10-minute charging benefit.
Battery chemistry limitationsEven with 800V and fast charging, lithium-ion cell chemistry limits how quickly energy can be safely transferred; exceeding this causes heat damage and cycle life loss.
Range trade-off with weightAdding 800V systems and a supercomputer for MB.OS adds weight, which reduces the theoretical range that the platform could achieve with a simpler electrical design.

How it works

3 parts

800V Architecture

High-voltage system for rapid charging

800V system handles 320 kW charging without losses, adding 325 km range in 10 minutes.

MB.OS

In-house operating system with AI

Custom OS on a supercomputer manages vehicles systems and user interface with machine learning.

Modular Platform

One base design for multiple body styles

The MMA underpins sedans (CLA), crossovers (GLA), and SUVs (GLB), reducing costs and speeding launches.

Spec sheet

Spec	MMA Platform (CLA EV)
Range (WLTP)	Up to 792 km^R (reported)
Peak charging power	320 kW^R (reported)
Range added in 10 minutes	325 km^R (reported)
Electrical system voltage	800 V^R (reported)
CLA 250+ power output	272 hp^R (reported)
CLA 250+ torque	247 ft-lbs^R (reported)

^R reported by the company

Update log

2 updates

Jan 2026

Major: 2026 Mercedes-Benz CLA EV launches with 792 km WLTP range and 800-volt fast chargingPressHardware

Sep 2023

Major: Mercedes-Benz unveils MMA platform with 800-volt architecture and MB.OS operating system at IAA MunichPressHardware

About Mercedes-Benz

The team behind MMA Platform (CLA EV)

Mercedes-Benz

Luxury cars, electric vehicles, MMA platform, MB.OS

Mercedes-Benz is a German luxury automaker with headquarters in Stuttgart and 164,000+ employees. It manufactures premium cars and EVs, and is pioneering the MMA electric platform with in-house MB.OS operating system.

Mercedes' MMA platform is purpose-built for electric cars, with 800V charging that adds 325 km of range in 10 minutes.
The CLA, first MMA model, launches in 2026 with MB.OS, an in-house operating system with AI and machine learning.
The platform will underpin four new models including the GLA and GLB SUVs, positioning Mercedes as a software-forward automaker.

group.mercedes-benz.com (opens group.mercedes-benz.com)Company profile →

Founded: 1886140 yrs
Headquarters: Germany
Status: Public
Valuation: public
Staff: ~164,120Oct 2026
Works in: VehiclesElectric carsComputing
Coverage: 1 program · 2 updateslatest 1 Jan 2026checked 10 Oct
Partners: Google (opens group.mercedes-benz.com)
Suppliers: Nvidia (opens nvidia.com)
People: Ola Källenius (opens en.wikipedia.org)CEO

Spec

MMA Platform (CLA EV)

Range (WLTP)

Up to 792 km^R (reported)

Peak charging power

320 kW^R (reported)

Range added in 10 minutes

325 km^R (reported)

Electrical system voltage

800 V^R (reported)

CLA 250+ power output

272 hp^R (reported)

CLA 250+ torque

247 ft-lbs^R (reported)