Mercedes-Benz of Portland

Compare the2026 Mercedes AMG C-Class Sedan VS 2026 Lexus IS

2026 Lexus IS2026 Mercedes AMG C-Class Sedan

Safety

The AMG C-Class Sedan has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The IS doesn’t offer front seat center airbags.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the AMG C-Class Sedan. But it costs extra on the IS.

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The AMG C-Class Sedan offers optional Car-to-X Communication, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The IS doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.

To help make backing out of a parking space safer, the AMG C-Class Sedan has standard Rear Cross-Traffic Alert with Active Brake Assist, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Rear Cross-Traffic Braking costs extra on the IS.

The AMG C-Class Sedan’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The IS doesn’t offer a driver alert monitor.

Both the AMG C-Class Sedan and the IS have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning and available lane departure warning systems.

The Insurance Institute for Highway Safety does 40 MPH moderate front offset crash tests on new cars. In this updated test, results indicate that the AMG C-Class Sedan is much safer than the IS:

AMG C-Class Sedan

IS

Overall Evaluation

GOOD

MARGINAL

Structure

GOOD

GOOD

Driver Injury Measures

Head/Neck Rating

GOOD

GOOD

Chest Rating

GOOD

GOOD

Thigh/hip Rating

GOOD

GOOD

Thigh Forces L/R

202/292 pounds

427/450 pounds

Leg/foot Rating

GOOD

GOOD

Thigh Forces L/R

202/292 pounds

427/450 pounds

Leg Forces L/R

427/495 pounds

540/652 pounds

Restraints

GOOD

GOOD

Rear Passenger Injury Measures

Head/Neck Rating

ACCEPTABLE

ACCEPTABLE

Thigh Rating

GOOD

GOOD

Restraints

GOOD

ACCEPTABLE

Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4189-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Mercedes AMG C-Class Sedan is safer than the IS:

AMG C-Class Sedan

IS

Overall Evaluation

GOOD

ACCEPTABLE

Structure

GOOD

MARGINAL

Driver Injury Measures

Head/Neck

GOOD

GOOD

Neck Compression

-892 lbs.

89 lbs.

Torso

ACCEPTABLE

ACCEPTABLE

Shoulder Force

-290 lbs.

312 lbs.

Torso Max Deflection

1.42 in

1.54 in

Pelvis

ACCEPTABLE

MARGINAL

Pelvis Force

1049 lbs.

1249 lbs.

Head Protection

GOOD

GOOD

Passenger Injury Measures

Head/Neck

GOOD

GOOD

Neck Tension

89 lbs.

178 lbs.

Neck Compression

-45 lbs.

0 lbs.

Torso

GOOD

GOOD

Shoulder Force

-223 lbs.

201 lbs.

Torso Deflection Rate

4 MPH

5 MPH

Pelvis

GOOD

GOOD

Pelvis Force

602 lbs.

870 lbs.

Head Protection

GOOD

GOOD

The Mercedes AMG C-Class Sedan achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2026 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated moderate overlap front crash test, updated side impact crash test, headlight evaluations, pedestrian crash prevention testing, and vehicle-to-vehicle crash prevention testing. The IS is not a “Top Safety Pick” for 2026.

Warranty

There are over 58 percent more Mercedes dealers than there are Lexus dealers, which makes it much easier should you ever need service under the AMG C-Class Sedan’s warranty.

Engine

The AMG C 43’s standard 2.0 turbo 4-cylinder hybrid produces 105 more horsepower (416 vs. 311) and 89 lbs.-ft. more torque (369 vs. 280) than the IS’ 3.5 DOHC V6. The AMG C 63 S E’s standard 2.0 turbo 4-cylinder hybrid produces 360 more horsepower (671 vs. 311) and 472 lbs.-ft. more torque (752 vs. 280) than the IS’ 3.5 DOHC V6.

As tested in Car and Driver the Mercedes AMG C-Class Sedan is faster than the Lexus IS:

AMG C 43

AMG C 63 S E

IS

Zero to 60 MPH

3.9 sec

2.9 sec

5.6 sec

Zero to 100 MPH

9.8 sec

7.1 sec

14.2 sec

5 to 60 MPH Rolling Start

5 sec

3.6 sec

5.9 sec

Quarter Mile

12.5 sec

11.2 sec

14.2 sec

Speed in 1/4 Mile

111 MPH

121 MPH

100 MPH

Top Speed

165 MPH

174 MPH

143 MPH

Fuel Economy and Range

On the EPA test cycle the AMG C-Class Sedan running on electricity gets better mileage than the IS:

MPGe

AMG C-Class Sedan

AWD

63 S E Electric Motors

36 city/38 hwy

IS

MPG

RWD

3.5 DOHC V6

19 city/27 hwy

AWD

3.5 DOHC V6

19 city/26 hwy

On the EPA test cycle the AMG C 43 with its standard engine running its gasoline engine gets better fuel mileage than the IS 350 F Sport AWD (19 city/27 hwy vs. 19 city/26 hwy).

The AMG C 63 S E can travel with zero emissions for 1 miles. The IS can’t move without running its internal combustion engine.

Regenerative brakes improve the AMG C-Class Sedan’s fuel efficiency by converting inertia back into energy instead of wasting it. The IS doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the AMG C-Class Sedan’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip. The IS doesn’t offer an automatic engine start/stop system.

Transmission

A nine-speed automatic (SMG) is standard on the Mercedes AMG C-Class Sedan, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the IS.

The AMG C-Class Sedan offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The IS doesn’t offer an SMG or a conventional manual transmission.

The AMG C-Class Sedan’s launch control uses engine electronics to hold engine RPM’s at 4000 in order to provide the most stable and rapid acceleration possible, using all of the available traction. The IS doesn’t offer launch control.

Brakes and Stopping

For better stopping power the AMG C-Class Sedan’s brake rotors are larger than those on the IS:

AMG C 43

AMG C 63 S E

IS

Front Rotors

14.6 inches

15.4 inches

13.1 inches

Rear Rotors

12.6 inches

14.6 inches

11.7 inches

The AMG C-Class Sedan offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The IS doesn’t offer ceramic brake rotors.

The AMG C-Class Sedan stops much shorter than the IS:

AMG C-Class Sedan

IS

100 to 0 MPH

281 feet

326 feet

Car and Driver

70 to 0 MPH

139 feet

155 feet

Car and Driver

60 to 0 MPH

99 feet

110 feet

Motor Trend

Tires and Wheels

For better traction, the AMG C-Class Sedan has larger standard tires than the IS (245/45R18 vs. 235/40R19). The AMG C 63 S E’s optional tires are larger than the largest tires available on the IS (F:265/35R20 & R:275/35R20 vs. F:235/40R19 & R:265/35R19).

The AMG C-Class Sedan’s optional 245/35R20 front and 265/30R20 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the IS F Sport’s 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the AMG C-Class Sedan offers optional 20-inch wheels. The IS’ largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the AMG C-Class Sedan can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The IS doesn’t offer run-flat tires.

Suspension and Handling

The AMG C-Class Sedan has a standard driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The IS’ suspension doesn’t offer adjustable shock absorbers.

The AMG C-Class Sedan’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The IS doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG C-Class Sedan’s wheelbase is 2.6 inches longer than on the IS (112.8 inches vs. 110.2 inches).

For better handling and stability, the average track (width between the wheels) on the AMG C-Class Sedan is 1.5 inches wider in the front than the track on the IS.

The AMG C-Class Sedan’s front to rear weight distribution is more even (49% to 51%) than the IS’ (54% to 46%). This gives the AMG C-Class Sedan more stable handling and braking.

The AMG C 63 S E handles at .99 G’s, while the IS 350 F Sport pulls only .89 G’s of cornering force in a Car and Driver skidpad test.

The AMG C 63 S E executes Motor Trend’s “Figure Eight” maneuver 1.4 seconds quicker than the IS 350 F Sport (24 seconds @ .88 average G’s vs. 25.4 seconds @ .71 average G’s).

Chassis

To almost totally eliminate engine vibration in the passenger area, the AMG C-Class Sedan Dynamic Plus has an electronically controlled liquid-filled front engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The IS uses conventional solid rubber engine mounts.

Passenger Space

The AMG C-Class Sedan has 2.8 cubic feet more passenger volume than the IS (93 vs. 90.2).

The AMG C-Class Sedan has 2.8 inches more front headroom, .4 inches more front shoulder room, .7 inches more rear headroom, 3.8 inches more rear legroom and 2.2 inches more rear shoulder room than the IS.

Cargo Capacity

The AMG C-Class Sedan has a larger trunk than the IS (11.6 vs. 10.8 cubic feet).

To allow full utilization of available cargo room, the AMG C-Class Sedan’s trunk lid uses concealed beam hinges that don’t intrude into the trunk. Its intrusive beam hinge reduces the IS’ useful trunk space.

Pressing a switch automatically lowers the AMG C-Class Sedan’s rear seats, to make changing between passengers and cargo easier. The IS doesn’t offer automatic folding seats.

To make loading and unloading groceries and cargo easier when your hands are full, the AMG C-Class Sedan’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The IS doesn’t offer a power or hands-free opening trunk.

Ergonomics

Unlike the driver-only memory system in the IS (except F Sport Design), the AMG C-Class Sedan has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The AMG C-Class Sedan’s standard easy entry and exit feature raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the IS.

The AMG C-Class Sedan offers an optional heads-up display that projects speed, tachometer, warning and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The IS doesn’t offer a heads-up display.

The power windows standard on both the AMG C-Class Sedan and the IS have locks to prevent small children from operating them. When the lock on the AMG C-Class Sedan is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The IS prevents the driver from operating the other windows just as it does the other passengers.

The AMG C-Class Sedan’s standard Keyless-Go allow you to unlock the doors from any outside door handle, open the trunk, and start the car, all without removing the key from pocket or purse. Smart Access standard on the IS doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear doors.

The AMG C-Class Sedan’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The IS’ cruise control switches are unlit, making them difficult to find at night and operate safely.

Heated windshield washer fluid is standard on the AMG C-Class Sedan to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The IS doesn’t offer heated windshield washer fluid.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the AMG C-Class Sedan has standard extendable sun visors. The IS doesn’t offer extendable visors.

A power rear sunshade and manual rear side window sunshades are standard in the AMG C-Class Sedan to help block heat and glare for the rear passengers. The IS doesn’t offer rear side window sunshades.

The Mercedes AMG C-Class Sedan has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Lexus charges extra for Homelink® on the IS.

The AMG C-Class Sedan has a 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The IS doesn’t offer a house-current electrical outlet.

The AMG C-Class Sedan’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The IS doesn’t offer an automated parking system.

Recommendations

J.D. Power and Associates rated the AMG C-Class Sedan first among compact premium cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The IS isn’t in the top three.

The Mercedes C-Class outsold the Lexus IS by 55% during 2025.