2025 Mercedes-Benz C-Class AMG C 43 vs 2025 Audi A4 Prestige S line
155 more hp and 96 more lb-ft torque vs $11,200 less and 4 MPG better. That is the real fork. Key numbers: 416 vs 261 hp, 22 vs 26 MPG.
The C-Class AMG C 43 leads on 155 more hp, 96 more lb-ft torque. The A4 Prestige S line leads on $11,200 less, 4 MPG better. The spec table compares 5 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 5 specifications.
Full Specification Comparison
Specifications and pricing reflect available data as of early 2026 and may not match current manufacturer figures. Always confirm details with an authorized dealer before making a purchase decision.
| Spec | 2025 Mercedes-Benz C-Class AMG C 43 | 2025 Audi A4 Prestige S line |
|---|---|---|
| Pricing | ||
| MSRP | $62,500 | $51,300 |
| Powertrain | ||
| Engine | 2.0L I4 mild-hybrid Turbo | 2.0L I4 mild-hybrid Turbo |
| Horsepower | 416 hp | 261 hp |
| Torque | 369 lb-ft | 273 lb-ft |
| Transmission | 9-speed shiftable automatic | 7-speed automated manual |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 19 | 23 |
| Highway MPG | 27 | 32 |
| Combined MPG | 22 | 26 |
| Fuel Tank | 17.4 gal | 15.3 gal |
| Dimensions | ||
| Curb Weight | 4,165 lbs | 3,682 lbs |
| Wheelbase | 112.8" | 111.0" |
| Length | 188.6" | 187.5" |
| Width | 74.4" | 72.7" |
| Height | 57.1" | 56.2" |
| Safety | ||
| NHTSA Overall | No published data | 5/5 stars |
| IIHS Award | TSP+ | No published data |
| Warranty | ||
| Bumper-to-Bumper | 4yr/50k | 4yr/50k |
| Powertrain | 4yr/50k | 4yr/50k |
| Corrosion | 4yr/50k | 12yr/unlimited |
| Roadside Assistance | 4yr/50k | 4yr/unlimited |
Frequently Asked Questions
What is the price difference between the 2025 Mercedes-Benz C-Class AMG C 43 and 2025 Audi A4 Prestige S line?
The 2025 Audi A4 Prestige S line starts at $51,300, $11,200 less than the 2025 Mercedes-Benz C-Class AMG C 43 at $62,500. On a 60-month loan that is roughly $198/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2025 Mercedes-Benz C-Class AMG C 43?
The 2025 Mercedes-Benz C-Class AMG C 43 is the stronger pick when the extra 155 hp matters for your commute or driving style.
Who should choose the 2025 Audi A4 Prestige S line?
The 2025 Audi A4 Prestige S line is the stronger pick when you want to keep $11,200 in your pocket and the 2025 Audi A4 Prestige S line covers your needs; lower running costs matter to you, roughly $294/year less on fuel.
Which gets better fuel economy, the 2025 Mercedes-Benz C-Class AMG C 43 or 2025 Audi A4 Prestige S line?
The 2025 Audi A4 Prestige S line rates 26 combined MPG, 4 MPG ahead.
Which is more powerful, the 2025 Mercedes-Benz C-Class AMG C 43 or 2025 Audi A4 Prestige S line?
The 2025 Mercedes-Benz C-Class AMG C 43 produces 416 hp, 155 more than the 2025 Audi A4 Prestige S line at 261 hp. The 2025 Mercedes-Benz C-Class AMG C 43 also leads in torque at 369 lb-ft vs 273 lb-ft.
Is the 2025 Mercedes-Benz C-Class AMG C 43 bigger than the 2025 Audi A4 Prestige S line?
The 2025 Mercedes-Benz C-Class AMG C 43 is 1.1″ longer at 188.6″ vs 187.5″. The 2025 Mercedes-Benz C-Class AMG C 43 has a 1.8″ longer wheelbase, which typically means more rear-seat legroom.
How do the warranties compare?
Both offer similar warranty coverage: 4yr/50k bumper-to-bumper and 4yr/50k powertrain.
Explore more: Mercedes-Benz trims, Mercedes-Benz C-Class trims, Audi trims, Audi A4 trims
C-Class vs A4: What This Matchup Is Really About
The 2025 Mercedes-Benz C-Class AMG C 43 and 2025 Audi A4 Prestige S line are both compact cars competing for the same buyer. Price, fuel economy, and daily comfort are the tie-breakers. The $-11,200 gap adds up to $198/month on a 60-month loan. That is real money, so the pricier option needs to earn it with capabilities you will actually use.
Under the Hood
Both run the same 2.0L I4 mild-hybrid Turbo engine. The 2025 Mercedes-Benz C-Class AMG C 43 has 155 more hp (416 vs 261). You will feel the difference merging, passing, and driving with a full car. The 2025 Mercedes-Benz C-Class AMG C 43 adds 96 more lb-ft of torque (369 vs 273), giving it stronger low-end pull off the line. Both use AWD.
Running Costs: C-Class vs A4
The 2025 Audi A4 Prestige S line saves roughly $294/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $1,470.
How Each One Fits Your Daily Life
The 2025 Mercedes-Benz C-Class AMG C 43 weighs 483 lbs more. Heavier vehicles tend to feel more planted at highway speed but use more fuel and are harder to stop quickly.
Bottom Line
Choose the 2025 Mercedes-Benz C-Class AMG C 43 when the extra 155 hp matters for your commute or driving style. Choose the 2025 Audi A4 Prestige S line when you want to keep $11,200 in your pocket and the 2025 Audi A4 Prestige S line covers your needs.
Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with Mercedes-Benz or Audi or any dealership.