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Compare 2–4 cars side by side. Every figure is sourced; the best value in each comparable row is marked.
| Specification | Cadillac2026 Cadillac CT4 Luxury RWD | Mercedes-Benz2026 Mercedes-Benz C 300 Sedan |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 138 mphBestIndependent test · Car and Driver | 130 mphManufacturer claim · Mercedes-Benz USA |
| Power-to-weight ratioCalculated from peak power and curb weight — figures quoted against a different weight basis (e.g. dry or DIN) will differ. | — | 147.0 hp/tCalculated |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 6.20 sManufacturer claim · Cadillac | 6.00 sBestManufacturer claim · Mercedes-Benz USA |
| 0–100 km/hLower is better | 6.40 sIndependent test · The Car Guide | 6.20 sBestManufacturer claim · Mercedes-Benz USA |
| Engine & Powertrain | ||
| Peak powerHigher is better | 237 hpManufacturer claim · Cadillac | 255 hpBestManufacturer claim · Mercedes-Benz USA |
| Peak torqueHigher is better | 258 lb-ftManufacturer claim · Cadillac | 295 lb-ftBestManufacturer claim · Mercedes-Benz USA |
| Engine displacement | 2000.0 ccManufacturer claim · Cadillac | 2000.0 ccManufacturer claim · Mercedes-Benz USA |
| Cylinder count | 4Manufacturer claim · Cadillac | 4Manufacturer claim · Mercedes-Benz USA |
| Engine layout | Inline-4Manufacturer claim · Cadillac | Inline-4Manufacturer claim · Mercedes-Benz USA |
| Engine placement | Front | |
| Dimensions | ||
| Length | 187 inManufacturer claim · Cadillac | 187 inManufacturer claim · Mercedes-Benz USA |
| Width | 78 inManufacturer claim · Cadillac | 74 inManufacturer claim · Mercedes-Benz USA |
| Height | 56 inManufacturer claim · Cadillac | 57 inManufacturer claim · Mercedes-Benz USA |
| Wheelbase | 109 inManufacturer claim · Cadillac | 113 inManufacturer claim · Mercedes-Benz USA |
| Ground clearance | 4 inManufacturer claim · Cadillac | — |
| Weight | ||
| Curb weight | — | 3825 lbManufacturer claim · Mercedes-Benz USA |
| Fuel Economy | ||
| Fuel economy (combined)Lower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 26.0 mpgHomologation · US EPA | — |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 22.0 mpgHomologation · US EPA | 25.0 mpgBestManufacturer claim · Mercedes-Benz USA |
| Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 32.0 mpgHomologation · US EPA | 35.0 mpgBestManufacturer claim · Mercedes-Benz USA |
| Fuel tank capacity | — | 17.4 galManufacturer claim · Mercedes-Benz USA |
| Estimated range (highway)Estimated from tank capacity and quoted highway economy — not an instrumented range. | — | 609 mi |
| Practicality | ||
| Cargo volumeHigher is better | 11 ft³Manufacturer claim · Cadillac | 12 ft³BestManufacturer claim · Mercedes-Benz USA |
| Seats | 5Manufacturer claim · Cadillac | 5Manufacturer claim · Mercedes-Benz USA |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $36,000Manufacturer claim · Cadillac | $49,650Manufacturer claim · Mercedes-Benz USA |
| Aerodynamics | ||
| Drag coefficient (Cd) | — | 0.24 :1Manufacturer claim · Mercedes-Benz USA |
| Tires & Wheels | ||
| Front tire size | — | 225/45R18Manufacturer claim · Mercedes-Benz USA |
| Rear tire size | — | 245/40R18Manufacturer claim · Mercedes-Benz USA |
Every figure is the car’s preferred, sourced value. “Best” marks the strongest value in a row, judged on the canonical measurement (so a winner is correct whichever unit system you view). Open a car to see each value’s source, original units, and alternates.
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Add a value with its source. An editor verifies every submission against its citation before it appears on the site.
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| Induction type | TurbochargedManufacturer claim · Cadillac | TurbochargedManufacturer claim · Mercedes-Benz USA |
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| Transmission type | Torque-converter automaticManufacturer claim · Cadillac | Torque-converter automaticManufacturer claim · Mercedes-Benz USA |
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| Number of gears | 8Manufacturer claim · Cadillac | 9Manufacturer claim · Mercedes-Benz USA |
|---|
| Estimated range (city)Estimated from tank capacity and quoted city economy — not an instrumented range. | — | 435 miCalculated |
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