2026 Mercedes-Benz CLA Sedan vs 2026 Audi A3: Full Comparison

Performance and Powertrain

The CLA Sedan's electric motors deliver 268 hp and 247 lb-ft of torque through an 85-kWh battery on an 800-volt architecture. That architecture matters at the charger: the CLA supports DC fast charging up to 320 kW, which means meaningful range added in short stops. The CLA 250+ sends power to the rear wheels; the CLA 350 4MATIC® adds a second motor for 4MATIC® all-wheel drive without adding a traditional mechanical drivetrain.

The A3 produces 201 hp and 236 lb-ft of torque from its 2.0-liter turbocharged four-cylinder paired with a 48-volt mild-hybrid system. The 7-speed S tronic dual-clutch automatic is responsive and well-matched to the engine. Quattro AWD is standard across all A3 trims, giving the A3 a grip advantage over the base RWD CLA 250+ in wet or cold conditions. The A3's 0-60 time is rated at 6.0 seconds.

For everyday driving, the CLA's instant electric torque delivery feels noticeably different from the A3's turbocharged pull. Buyers who frequently use DC fast chargers and drive mostly within a metro area will favor the CLA. Buyers who travel long rural distances without reliable charging infrastructure may prefer the A3's gasoline convenience.

Interior, Space, and Cargo

The CLA Sedan seats five and offers 10.3 cubic feet of cargo space behind the second row, plus a front trunk with a cargo organizer that the A3 cannot match. Standard equipment on the CLA includes heated power front comfort seats with 4-way lumbar support and memory, a fixed panoramic moonroof, and four 100-watt USB-C charging ports.

The A3 seats five and provides 8.3 cubic feet of cargo space. Standard content includes heated front seats, leather seating surfaces, and a panoramic moonroof. Tri-zone automatic climate control is standard, a feature the CLA offers as an option through the Exclusive trim package.

On total cargo capacity the CLA leads, and the frunk adds meaningful flexibility. The A3's tri-zone climate control as standard content is a practical advantage in its column.

CLA Sedan interior features

Technology and Safety

The CLA Sedan runs MB.OS, Mercedes-Benz's proprietary operating system, with fourth-generation MBUX and AI voice control that integrates both ChatGPT and Google Gemini. The standard screen setup pairs a 10.25-inch digital instrument cluster with a 14-inch central touchscreen. An optional MBUX Superscreen adds a 14-inch front passenger display as a third screen. Wireless Apple CarPlay and Android Auto are standard. The iconic grille features 142 individually illuminated stars. An optional Burmester 3D Surround Sound system offers 16 speakers, 850 watts, and Dolby Atmos support.

The A3 pairs a 12.3-inch Audi virtual cockpit digital instrument cluster with a 10.1-inch MMI touch display. Wireless Apple CarPlay and Android Auto are standard. The 360-degree camera system and Park Assist Plus are standard on the Premium Plus trim. An available Sonos system offers 15 speakers and a 16-channel amplifier.

On the safety side, both vehicles include forward collision warning with automatic emergency braking, lane departure warning, blind-spot monitoring, and rear cross-traffic alert. The CLA adds PRE-SAFE Plus, which can pre-tension the front seatbelts before certain detected impacts, an evasive steering function, emergency stop assist, available adaptive cruise control with Distance Assist DISTRONIC, and a standard center airbag between the front seats. The A3 includes traffic sign recognition as a standard feature not listed on the CLA.

NHTSA safety ratings

Value and Ownership

Both vehicles carry 4-year / 50,000-mile New Vehicle Limited Warranty coverage. Coverage terms, exclusions, and owner responsibilities are defined in the applicable manufacturer warranty documentation. The CLA adds an 8-year / 100,000-mile EV battery warranty, a long-term ownership assurance the A3 cannot offer by nature of its gasoline powertrain.

The CLA’s charging setup supports Level 2 AC charging through J1772 and NACS support for DC fast charging. A CCS-to-NACS DC fast-charging adapter is included, giving access to a wide network of compatible public chargers. Compatibility with some 400-volt DC fast chargers may require factory-equipped converter hardware, depending on vehicle production timing and configuration. Fueling costs for an EV versus a gasoline vehicle vary by region, driving habits, and local electricity rates, but the structural cost-per-mile advantage typically favors electric ownership for high-mileage drivers.

The A3 delivers 28 combined MPG from a premium-fuel gasoline engine. For buyers not yet ready to manage home charging or charging-stop planning, the A3's ownership model is simpler on day one.

Feature availability, Digital Extras, charging capability, charging-station compatibility, warranty coverage, range, fuel economy, and performance figures may vary by model, equipment, production timing, battery state, driving conditions, and vehicle-specific configuration. Confirm all specifications and coverage terms on the specific vehicle before purchase or lease.

Mercedes-Benz EV ownership resources