The compact AMG brute against the larger, more refined executive bruiser. Both pack V8 power, but which one fits your driving style, your budget, and your life? Real 2025 UK data and a clear verdict below.
The E63 wins for most buyers who can afford it. It offers the same intoxicating V8 experience as the C63, but in a package that is genuinely more refined, more spacious, and better suited to everyday use. The C63 is the sharper, more focused driver's car — but the E63 is the better all-rounder, and its extra size and weight actually make it more stable at high speed.
Full comparison of reliability, running costs, ownership economics and which one to choose below.
| C63 AMG (W205) | E63 AMG (W213) | |
|---|---|---|
| Body Style | Saloon / Estate | Saloon / Estate |
| Engine | M177 4.0L V8 biturbo | M177 4.0L V8 biturbo |
| 2025 UK Enquiries | — [EM-VERIFIED] | — [EM-VERIFIED] |
| Recon Supply Cost | £9,000–£14,000 [EM-QUOTE] | £9,000–£14,000 [EM-QUOTE] |
| Defining Weakness | M177 valve cover oil leaks, coolant issues | M177 valve cover oil leaks, coolant issues |
| Best For | Thrill-seeking, B-road fun, track use | Long-distance, high-speed cruising, family space |
The E63 is the better all-round car, but the C63 is the purer driver's machine. If you can afford the higher running costs and the extra purchase price (typically £5,000–£10,000 more for an equivalent E63), the E63 is the more complete car — more spacious, more comfortable, and more stable at high speed. The C63, however, is more agile, more engaging, and more exciting on a twisty road. The choice depends entirely on how you plan to use the car [PATTERN DATA].
Both share the M177 V8 biturbo engine, which generated 370 enquiries across all Mercedes models in 2025 [EM-VERIFIED]. The engine's known weaknesses — valve cover oil leaks, coolant system issues, and occasional turbo problems — are identical in both models [PATTERN DATA]. The only difference is weight: the E63 is about 200kg heavier, which affects fuel economy, tyre wear, and brake life.
The Mercedes C63 AMG (W205, 2015–2021) is the compact executive AMG saloon. It uses the M177 4.0-litre V8 biturbo engine, producing up to 510hp in standard form and 550hp in the S variant. The C63 is the lighter, more agile of the two AMGs, and it feels noticeably more rear-driven and playful on a twisting road. The chassis is well-balanced, and the suspension (adaptive dampers on later models) offers a genuine dual personality — compliant in Comfort mode, and sharply controlled in Sport+.
The C63's known weaknesses are shared with the E63: oil leaks from valve covers (a common M177 issue), coolant system leaks, and occasional turbocharger problems [EM-INTERVIEW]. The C63 is also known for aggressive tyre wear, particularly on the rear axle, and the brakes are expensive to replace (over £1,500 for a set of front discs and pads on the carbon-ceramic option). Full specs and fitment on the C-Class model page and the M177 Knowledge Centre.
The Mercedes E63 AMG (W213, 2017–2023) is the executive AMG saloon, using the same M177 V8 as the C63 but with a more sophisticated 9-speed MCT gearbox and 4MATIC+ all-wheel drive (the C63 is rear-wheel drive only). The E63 is more powerful in standard form (612hp vs 510hp) and significantly quicker in a straight line. But the real difference is the driving experience: the E63 is a more composed, refined, and stable car at high speed, making it the better choice for long-distance touring and autobahn-style cruising.
The E63's weight penalty (about 200kg) is noticeable in corners — it's less agile and playful than the C63. But the all-wheel-drive system gives it incredible traction, and the drift mode allows tail-out fun when you want it. The E63 also has more space inside (about 100mm extra legroom) and a larger boot (540 litres vs 480 litres). The E63's known weaknesses are the same as the C63's — M177 oil leaks and coolant issues [EM-INTERVIEW]. Full specs on the E-Class model page and the M177 Knowledge Centre.
The E63 is significantly more expensive to own than the C63. The purchase price difference is substantial: a comparable E63 is typically £5,000–£10,000 more than an equivalent C63 on the used market. Fuel economy is worse (the E63 is heavier), insurance is higher, and tyre wear is more aggressive. Servicing costs are broadly similar (both use the M177 engine), but the E63's larger brakes and more complex suspension (air suspension on most models) add to the running costs.
Engine replacement costs are identical: a reconditioned M177 costs £9,000–£14,000 supply-only for both models [EM-QUOTE]. The repair vs replace framework applies equally to both, with the 70% Mercedes threshold. Both cars are typically worth enough to justify an engine replacement (the C63 and E63 hold their value well), but the E63's higher purchase price means the replacement cost is a smaller percentage of the car's overall value.
You prioritise driving engagement, back-road thrills, and that sharp, rear-driven AMG feel. The C63 is the more fun car on a twisty road.
You cover high mileage, regularly carry passengers, or want the most capable all-rounder. The E63 is the better long-distance companion.
Both offer estates. The C63 estate is smaller but still practical; the E63 estate is cavernous. Choose based on your cargo needs.
The C63 is the cheaper entry point into AMG V8 ownership. Lower purchase price, lower running costs, and still 90% of the thrills.
A final thought: the E63 is the better car on paper — more powerful, more spacious, more refined. But the C63 is the better driver's car. If you're buying an AMG for the experience, the C63 delivers more of that raw, visceral thrill. If you're buying an AMG to use every day, the E63 is the smarter choice. Both are brilliant — the right answer depends entirely on your priorities.
They use the same M177 V8 engine, so reliability is functionally identical. Both share the same known weaknesses: valve cover oil leaks, coolant system issues, and occasional turbo problems. Neither has a unique reliability advantage over the other.
The C63 is cheaper to run. It's lighter (about 200kg less), which means better fuel economy, less tyre wear, and less aggressive brake wear. The E63's extra weight and more complex suspension (air suspension on most models) add to the running costs.
If you cover high mileage, regularly carry passengers, or want the most stable high-speed cruiser, yes. If you're buying for pure driving engagement, the C63 offers more thrills for less money. The E63 is the better all-rounder; the C63 is the better driver's car.
Yes, both use the M177 4.0-litre V8 biturbo. The E63 has a higher power output (612hp vs 510hp) and uses a 9-speed MCT gearbox with 4MATIC+ all-wheel drive, compared to the C63's 7-speed and rear-wheel drive.
The C63 holds its value slightly better as a percentage, simply because it's cheaper to start with. The E63 loses more in absolute terms, but both AMG models hold their value better than most other Mercedes models.
Real 2025 UK Data
Both models analysed from verified enquiry data [EM-VERIFIED]
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