2026 Mercedes CLA Petrol Review: Specs, Interior, Features and Real-World Driving Impressions

2026 Mercedes CLA Petrol Review front and side exterior design view

2026 Mercedes CLA Petrol Review

The all-new Mercedes CLA has arrived in a new generation, and this version focuses on the combustion engine model. Most buyers of the previous CLA are still more comfortable with petrol power, mainly due to charging infrastructure and real-world usability. This article organizes the real driving data, design details, interior experience, and performance clearly so it is easy to understand and useful for buyers.

Mercedes CLA Petrol vs Electric Version: Key Difference at a Glance

The petrol hybrid version and electric version look similar but behave very differently in daily use.

Visual Differences

  • Petrol version gets an open front grille with tiny star pattern

  • Electric version gets a closed grille with illuminated stars

  • Petrol version has illuminated grille frame instead of fully lit grille

  • Both variants get Matrix LED headlamps with strong night performance

Dimensions and Platform Details

The new CLA remains a coupe-style sedan and does not switch to fastback shape.

Key body details:

  • Length: 4,720 mm

  • Body style: Classic sedan

  • Platform: Front-wheel drive based platform

  • Optional 4MATIC all-wheel drive available

  • Shooting Brake estate version available for both petrol and EV models

Wheel Options

Wheel SizeAvailable Size
Entry17 inch
Test car18 inch
Top option19 inch

This test car used 18-inch wheels with aerodynamic inserts.

2026 Mercedes CLA Petrol Review front and side exterior design view
Front and side profile view of the 2026 Mercedes CLA petrol version showing the open diamond-pattern grille, slim LED headlamps, illuminated light strip, coupe-style roofline, aerodynamic alloy wheels, and sporty character lines as covered in the 2026 Mercedes CLA Petrol Review.

Engine and Powertrain Details

This petrol CLA uses a completely new mild hybrid engine.

Engine Specifications

SpecificationDetails
Engine type1.5L 4-cylinder turbo petrol
Hybrid typeMild hybrid with eBoost
TransmissionDual clutch automatic
Variant testedCLA 220 4MATIC
Power output211 hp
0–100 km/h7.1 seconds

Available power outputs:

  • Three engine power variants currently offered

  • Slowest versions closer to 9 seconds for 0–100 km/h

Important technical facts:

  • Uses camshaft drive chain, not wet timing belt

  • NVH foam insulation under bonnet for quieter cabin

  • No frunk because this is not an EV platform

Real World Driving Experience

Fuel Efficiency

During real testing:

Test ConditionConsumption
Flat roads~6.0 L/100 km
US equivalent39 mpg
UK equivalent47 mpg

Eco mode allows electric coasting downhill with engine completely off.

Driving Characteristics

What feels good:

  • Suspension feels most refined part of the car

  • Soft, floaty Mercedes ride at all speeds

  • Light steering in Comfort mode

  • Heavier steering in Sport or Individual mode

  • Very stable at high speed

What feels weak:

  • Dual clutch gearbox stutters at low speed

  • Jerky downshifts when slowing below 30 km/h

  • Does not feel punchy out of corners like EV

All Wheel Drive Logic

ConditionPower Distribution
Low speedsUp to 40% rear
Sport modeMore rear engagement
Above 120 km/hFront-wheel drive only

Interior Experience and Cabin Quality

Materials and Design Highlights

  • Frameless doors

  • Artico leatherette seats

  • Paper-wood matte decorative trims

  • Ambient lighting in turbine air vents

  • Progressive trim used in test car

  • AMG Line available for sportier exterior and interior

Seating Reality

Front seats:

  • Good shoulder comfort

  • Seat base is too short

  • Seat cushioning feels firm at sit bone area

Rear seats:

  • Better leg position in petrol version than EV

  • Feet sit lower due to transmission tunnel instead of battery floor

  • Headroom tight for tall passengers with glass roof

Car Technology and Infotainment

Screens and Controls

FeatureAvailability
Digital instrumentsStandard
Central screenStandard
Passenger screenOptional

Key usability points:

  • Return of physical steering wheel buttons

  • Volume scroll works well

  • Cannot skip tracks from steering wheel

  • Climate control icons are too small

  • Temperature display partially blocked by steering wheel

Smartphone Integration

Supports:

  • Apple CarPlay

  • Android Auto

  • Waze, Google Maps, Apple Maps integration

Wireless charging:

  • Inductive charging pad

  • USB-C fast charging ports in lower compartment

2026 Mercedes CLA Petrol Review interior with triple screens dashboard layout
Full front interior view of the 2026 Mercedes CLA showing the wide triple-screen layout with digital instrument cluster, central infotainment touchscreen, optional passenger display, flat-bottom steering wheel with physical controls, ambient lighting, turbine-style air vents, premium dashboard materials, and center console as explained in the 2026 Mercedes CLA Petrol Review.

Rear Seat Practicality

Important point for buyers choosing petrol over EV.

Rear Seat Comparison

AreaPetrol VersionElectric Version
Floor heightLowerRaised due to battery
Foot spaceDeeperFlat and higher
Seating postureMore naturalKnees higher

This makes the petrol CLA better for taller rear passengers.

Boot Space and Usability

Boot Measurements

MeasurementValue
Boot capacity405 liters
Width at narrow point~40 inches
Length to rear seat~42 inches
Max folded length~70 inches
Height limit~18 inches

Both petrol and EV versions offer the same boot volume.

Driving Experience Compared to Electric CLA

Petrol CLA Advantages

  • Lighter weight

  • Better balance in corners

  • More comfortable for passengers in twisty roads

  • Better rear seating comfort

Electric CLA Advantages

  • More powerful versions available

  • Faster acceleration

  • Smoother driving without gear shifts

  • No gearbox stutter

Pricing Overview

New Mercedes CLA Petrol Price

RegionStarting Price
Europe€44,000
UK£39,000

Fully Loaded Price

VersionApprox Price
Top petrol AWD~€67,000
EV premium over petrol+€4,000 to €8,000

Final ownership cost depends heavily on local petrol taxes and EV incentives.

Verdict: Which Mercedes CLA is Better?

The petrol Mercedes CLA makes sense if:

  • You do not have reliable charging access

  • You want a lighter and more balanced drive

  • Rear seat comfort matters

  • You prefer traditional engine feel

The electric CLA makes more sense if:

  • You want stronger acceleration

  • You prefer silent, smooth driving

  • Your city has good charging infrastructure

The petrol CLA 220 is the best petrol pick. Lower engine variants may feel underpowered in real usage.

Mercedes CLA Petrol vs Electric – FAQs

What is the main visual difference between the petrol and electric Mercedes CLA?

The petrol version gets an open front grille with tiny star elements, while the electric version has a fully closed grille with illuminated stars. The petrol model also uses an illuminated grille frame instead of a fully lit panel.

What engine is used in the petrol Mercedes CLA 220?

The petrol CLA 220 uses a new 1.5-litre four-cylinder turbo engine with mild hybrid technology. It also features eBoost and uses a camshaft drive chain instead of a wet timing belt.

How powerful is the Mercedes CLA 220 petrol version?

The CLA 220 produces 211 horsepower and accelerates from 0 to 100 km/h in around 7.1 seconds. Slower variants take close to 9 seconds.

How fuel efficient is the petrol Mercedes CLA in real-world driving?

In real road tests, the car delivered around 6.0 litres per 100 km. This equals about 39 mpg (US) and 47 mpg (UK), especially in Eco mode where the engine can switch off while coasting.

Does the petrol CLA drive in pure electric mode?

It does not have a full electric-only driving mode, but the mild hybrid system allows electric coasting during downhill driving and when rolling towards traffic lights.

How does the all-wheel drive system work in the CLA 220?

The 4MATIC system can send up to 40 percent of power to the rear wheels at lower speeds. Above 120 km/h, the car switches to front-wheel drive for better efficiency.

Is the petrol CLA smoother to drive than the electric version?

The petrol model feels lighter and more agile in corners, but the electric version is smoother because it does not use a traditional gearbox. The petrol model can feel jerky at low speeds due to the dual-clutch transmission.

How comfortable are the seats in the new Mercedes CLA?

The seats look premium and use Artico leatherette, but the seat base feels short and firm. Some drivers may find the seating depth and cushioning less comfortable on long drives.

Is rear seat space better in the petrol CLA or the electric CLA?

Rear seat comfort is better in the petrol version because the floor is lower. The electric version has a raised floor due to the battery, which forces a higher knee position.

What is the boot space of the Mercedes CLA?

Both the petrol and electric versions offer 405 litres of boot space. With the rear seats folded, the usable length increases significantly, but height is limited to around 46 cm.

Does the Mercedes CLA petrol version have a frunk?

No, the petrol version does not have a front trunk. The engine bay is occupied by the combustion engine and hybrid components.

What technology features are available inside the new CLA?

The cabin offers digital instruments, a large central touchscreen, optional passenger display, wireless charging, USB-C fast chargers, Apple CarPlay, Android Auto, Waze, Google Maps and ambient lighting.

What are the common complaints about the infotainment system?

The climate control icons are small, and important information can be blocked by the steering wheel. Track skipping cannot be done directly from the steering wheel.

What is the starting price of the new Mercedes CLA petrol model?

The petrol Mercedes CLA starts at around €44,000 in Europe and about £39,000 in the UK. Fully loaded versions can reach close to €67,000.

How much more expensive is the electric CLA compared to the petrol version?

The electric version usually costs around €4,000 to €8,000 more, depending on battery size and market-specific taxes or incentives.

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