Car Comparison
Mercedes-Benz C 63 AMG vs Audi RS4: Performance, Price, Efficiency and Cost
Compare recorded performance, listed price, efficiency and calculated energy-cost scenarios on one dedicated page.
Quick Verdict
The Mercedes-Benz C 63 AMG vs Audi RS4 decision should be read by category, not as one universal winner. The better choice depends on how you weight performance, price, running cost and practicality.
2020 Mercedes-Benz C 63 AMG vs 2024 Audi RS4: which is better for your priorities?
The 2020 Mercedes-Benz C 63 AMG vs 2024 Audi RS4 comparison is built for drivers who want a direct side-by-side view before making a shortlist. If you are asking which is better between 2020 Mercedes-Benz C 63 AMG and 2024 Audi RS4, this page brings the most important numbers together in one place, including horsepower, 0-100 km/h performance, top speed, engine details, price, and fuel consumption. Some matchups look obvious at first glance, but the better choice often changes once you compare acceleration, high-speed performance, and day-to-day costs in the same view. That makes it easier to separate headline speed from real-world value without jumping between multiple tabs.
On power, 2020 Mercedes-Benz C 63 AMG leads the matchup with 510 hp against 450 hp. For 0-100 km/h, 2024 Audi RS4 is quicker at 3.7 seconds versus 4.0 seconds. At the top end, 2024 Audi RS4 reaches 300 km/h, compared with 280 km/h. 2020 Mercedes-Benz C 63 AMG uses 4.0 L V8 Biturbo, while 2024 Audi RS4 comes with 2.9 TFSI 450CV quattro Tipt.
Price can shift the answer depending on your budget: 2020 Mercedes-Benz C 63 AMG is listed at $63,950, while 2024 Audi RS4 comes in at $96,500. If running costs matter, 2020 Mercedes-Benz C 63 AMG looks more efficient on paper at 10.0 L/100km versus 12.5 L/100km. The full comparison table adds more context beyond the headline figures, so you can judge where the performance gap is meaningful and where the differences are smaller than expected. Use the detailed table below to decide whether 2020 Mercedes-Benz C 63 AMG or 2024 Audi RS4 is the better fit for your priorities, whether that means speed, character, efficiency, or overall value.
Power: 510 hp vs 450 hp
0-100 km/h: 4.0 s vs 3.7 s
Top speed: 280 km/h vs 300 km/h
VS
Performance Comparison
For performance, compare power, 0-100 km/h acceleration and top speed together. Mercedes-Benz C 63 AMG records 510 hp, 4.0 seconds to 100 km/h and 280 km/h, while Audi RS4 records 450 hp, 3.7 seconds and 300 km/h.
Price and Value
Price changes the answer because a quicker car is not always the better buy. Mercedes-Benz C 63 AMG is listed at $63,950, while Audi RS4 is listed at $96,500. Use the price gap together with performance and equipment to judge real value.
Fuel Economy
Fuel economy is part of the long-term cost picture. Mercedes-Benz C 63 AMG is rated at 10.0 L/100km, while Audi RS4 is rated at 12.5 L/100km. For high-mileage drivers, even a small efficiency difference can matter.
Priority verdict
Category winners for this matchup
Best Performance
2024 Audi RS4
Highest weighted performance score from power, acceleration, and top speed (67/100).
Best Value
2020 Mercedes-Benz C 63 AMG
Best mix of price, performance, and efficiency (77/100).
2020 Mercedes-Benz C 63 AMG
Pros
- More power
- Lower price
- Better efficiency
Cons
- Slower off the line
- Lower top speed
- Older model year
2024 Audi RS4
Pros
- Quicker 0-100 km/h
- Higher top speed
- Newer model year
Cons
- Less power
- Higher price
- Higher fuel consumption
Buyer guide
Which One Should You Buy?
You prioritize a lower listed price, stronger horsepower, and better recorded efficiency.
You prioritize quicker 0-100 km/h acceleration, a higher top speed, and a newer model year.
Power
510 hp vs 450 hp
0-100 km/h
4.0 s vs 3.7 s
Top Speed
280 km/h vs 300 km/h
YouTube
2020 Mercedes-Benz C 63 AMG vs 2024 Audi RS4
Open YouTube search results for head-to-head runs of this matchup.
Technical data
2020 Mercedes-Benz C 63 AMG vs 2024 Audi RS4 specification table
Use this table to compare the recorded figures side by side. Highlighted values mark the stronger measurable result where a direct comparison is possible.
| Metric | 2020 Mercedes-Benz C 63 AMG | 2024 Audi RS4 | Source / standard |
|---|---|---|---|
| Power | 510 hp | 450 hp | 2020 Mercedes-Benz C 63 AMG: unverified record; 2024 Audi RS4: unverified record. |
| 0-100 km/h | 4.0 s | 3.7 s | 2020 Mercedes-Benz C 63 AMG: unverified record; 2024 Audi RS4: unverified record. |
| Top Speed | 280 km/h | 300 km/h | 2020 Mercedes-Benz C 63 AMG: unverified record; 2024 Audi RS4: unverified record. |
| Engine | 4.0 L V8 Biturbo | 2.9 TFSI 450CV quattro Tipt | 2020 Mercedes-Benz C 63 AMG: unverified record; 2024 Audi RS4: unverified record. |
| Length | 465 cm est. | 465 cm est. | Recorded dimensions when available; estimated values are marked est. |
| Width | 184 cm est. | 184 cm est. | Recorded dimensions when available; estimated values are marked est. |
| Weight | 1670 kg est. | 1670 kg est. | Recorded dimensions when available; estimated values are marked est. |
| Price | $63,950 | $96,500 | Listed market value; market context appears in the transparency panel. |
| Consumption | 10.0 L/100km | 12.5 L/100km | Manufacturer, EPA, WLTP, or public economy figure when available. |
Data may vary by trim, market, tires, battery, transmission, model year and testing method. Confirm exact specifications with the manufacturer or seller before making a purchase decision.
Original calculation
CarQuantix five-year energy and performance-value scenario
15,000 km/year; $1.25 per litre or $0.18 per kWh; unchanged consumption and energy price. Insurance, tax, servicing, tires, finance and depreciation are excluded.
2020 Mercedes-Benz C 63 AMG annual energy$1875
2024 Audi RS4 annual energy$2344
2020 Mercedes-Benz C 63 AMG five-year energy$9375
2024 Audi RS4 five-year energy$11719
2020 Mercedes-Benz C 63 AMG performance-value index79.75
2024 Audi RS4 performance-value index46.63
Formula: Energy cost = distance / 100 × recorded consumption × assumed unit price. Value index = hp / listed price × 10,000. These are comparable scenarios based on recorded inputs, not ownership promises or resale forecasts.
Data transparency
CarQuantix is an independently developed vehicle research platform. Data is collected from manufacturer and public automotive sources and manually reviewed before publication when source data is available.
Reviewed by
Kerim Orazov — Founder & Automotive Data Analyst
Last updated
2026-07-08
Market used
US
Test standard
Manufacturer/public specification baseline
Source policy
Manufacturer and public automotive sources; manually reviewed before publication when source data is available.
Report incorrect data
Include the model year, trim, market, the field that looks wrong, and the source you are using.
Update history
- 2026-07-08: Comparison transparency metadata refreshed.
- 2026-07-08: Added source notes, market context, test-standard notes, and correction workflow.
Sources and data notes
Specifications and figures are compiled from manufacturer information, public vehicle databases, safety organizations, fuel economy references and editorial review. Exact values can vary by trim, market, tire, battery, transmission and model year.
FAQ
Which is better, Mercedes-Benz C 63 AMG or Audi RS4?
The Mercedes-Benz C 63 AMG vs Audi RS4 decision should be read by category, not as one universal winner. The better choice depends on how you weight performance, price, running cost and practicality.
Which is faster, Mercedes-Benz C 63 AMG or Audi RS4?
Compare horsepower, 0-100 km/h and top speed together. Mercedes-Benz C 63 AMG has 510 hp and a 280 km/h top speed, while Audi RS4 has 450 hp and a 300 km/h top speed.
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