Mercedes M272 Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The 2.5-litre to 3.5-litre V6 petrol engine fitted to core Mercedes-Benz models from 2004 to 2011, including the C-Class, E-Class, and CLK. Reconditioned Mercedes M272 units are typically available from £3,800 , reflecting consistent specialist demand for this widely used platform.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Secure enquiry - no spam.
Quotes only from vetted UK engine specialists.
Mercedes M272 - Specifications at a Glance
Vetted UK specialists for M272 replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Which Mercedes Models Use the M272-
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|
M272 is documented across 0 BMW applications spanning . Registration lookup confirms the exact suffix before quotes are sent.
Not sure which engine your car has- Enter your registration above - we'll confirm your exact M272 fitment before any quotes are sent.
Mercedes M272 Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|
All pricing guidance shown here is indicative.
Fitting a Mercedes M272 typically takes 12-16 hours at £65/hr (independent specialist rate) - confirm exact labour when comparing quotes.
Ready to compare M272 quotes?
Get competitive quotes from trusted UK specialists today.
Mercedes M272 Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the M272, based on real-world data and verified failure patterns.
Real-world failure data and repair guidance from UK specialists.
Compare rebuilt M272 prices with the failure already addressed
M272 Sub-Codes Explained - Which One Is in Your Car-
The M272 family covers several raw sub-codes that share the same core 90-degree V6 architecture but differ by displacement, intake manifold design, and calibration. Identifying your exact sub-code is critical, as components like the intake manifold, ECU, and engine mounts are not universally interchangeable. #### M272.920 - 2.5L V6 (150kW / 204hp), 2005-2009 - **Fitted to:** Mercedes C-Class (W203 C230) - **Key technical difference:** The smallest displacement variant in the family, featuring a specific intake manifold and lower-output calibration. - **Sub-code-specific failure note:** Shares the family balance shaft and timing chain wear pattern. - **Interchange note:** Not a straight swap with 3.0L or 3.5L variants; the ECU, wiring loom, and exhaust systems differ significantly. #### M272.940 - 3.0L V6 (170kW / 231hp), 2005-2011 - **Fitted to:** Mercedes C-Class (W203/W204 C280), Mercedes E-Class (W211 E280), CLK (C209) - **Key technical difference:** The mid-range 3.0-litre variant, widely used as the standard V6 option before the 3.5L took over. - **Sub-code-specific failure note:** Shares the family balance shaft pattern; intake manifold runner flaps can also stick, causing rough idle. - **Interchange note:** Physically similar to the .960 but requires the correct ECU calibration and specific exhaust routing to run safely. #### M272.950 - 3.5L V6 (225kW / 306hp), 2009-2011 - **Fitted to:** Mercedes S-Class (W221 S350), Mercedes E-Class (W212 E350) - **Key technical difference:** Updated 3.5-litre variant with revised intake geometry and higher output, often paired with updated 7G-TRONIC PLUS transmissions. - **Sub-code-specific failure note:** Shares the family timing chain pattern, though later production years saw minor metallurgy improvements to the sprockets. - **Interchange note:** Cannot be swapped with early 3.5L (.960) units without extensive ECU and wiring modifications due to updated sensor layouts. #### M272.960 - 3.5L V6 (200kW / 272hp), 2005-2009 - **Fitted to:** Mercedes C-Class (W203/W204 C350), Mercedes E-Class (W211 E350), Mercedes ML (W164 ML350) - **Key technical difference:** The original high-output 3.5-litre variant, featuring the notorious early-batch balance shaft sprockets (highest risk group). - **Sub-code-specific failure note:** Highest incidence of balance shaft sprocket wear within the entire M272 family. - **Interchange note:** Requires specific engine mounts and exhaust manifolds; not a direct drop-in for the later .950 revision.
**HOW TO CONFIRM YOUR CODE:** The M272 engine code is stamped on a machined pad on the engine block, typically near the oil filter housing or bell housing. It is also clearly listed on your vehicle's V5C registration document under "Engine Number". Enter your registration above to confirm your exact M272 fitment before any quotes are sent.
The long-running 2.6L-3.2L V6 the M272 replaced in 2004; it used a conventional timing belt arrangement and did not suffer from the M272's notorious balance shaft sprocket wear.
The direct 3.5L V6 successor introduced from 2011, featuring a revised timing chain architecture and, in later variants, direct injection, largely resolving the balance shaft and camshaft adjuster vulnerabilities of the M272.
The 4.6L/5.5L V8 counterpart of the same modular family, fitted to higher-spec S-Class and E-Class models; owners of V8-powered cars should look here, as the M273 shares the same balance shaft architecture but differs in displacement and mounting.
Confirm the exact M272 fitment
**HOW TO CONFIRM YOUR CODE:** The M272 engine code is stamped on a machined pad on the engine block, typically near the oil filter housing or bell housing. It is also clearly listed on your vehicle's V5C registration document under "Engine Number". Enter your registration above to confirm your exact M272 fitment before any quotes are sent.
Buying a Replacement Mercedes M272 - What to Choose
Choosing the right replacement route depends on your budget, risk tolerance, and ownership goals. Here's a breakdown of your options.
Used:
Reconditioned:
Rebuilt:
Supply & Fit Line:
Vehicle Value Note:
Compare M272 Engine Prices Now
Engines Related to the Mercedes M272
Explore engines that are closely related to the Mercedes M272, including its predecessor, successor, and key family variants.
M112
The long-running 2.6L-3.2L V6 the M272 replaced in 2004; it used a conventional timing belt arrangement and did not suffer from the M272's notorious balance shaft sprocket wear.
M276
The direct 3.5L V6 successor introduced from 2011, featuring a revised timing chain architecture and, in later variants, direct injection, largely resolving the balance shaft and camshaft adjuster vulnerabilities of the M272.
M273
The 4.6L/5.5L V8 counterpart of the same modular family, fitted to higher-spec S-Class and E-Class models; owners of V8-powered cars should look here, as the M273 shares the same balance shaft architecture but differs in displacement and mounting.
Mercedes M272Frequently Asked Questions
Question 1How much does a Mercedes M272 engine replacement cost in the UK-
A Mercedes M272 engine replacement typically costs between £3,800 and £6,500 for a reconditioned supply-only unit . Fitted costs generally add £780-£1,040 for independent specialist labour, and fully rebuilt units with upgraded balance shaft components can reach £5,500-£8,500 supply-only.
- Fitted costs generally add £780-£1,040 for independent specialist labour.
- Fully rebuilt units with upgraded balance shaft components can reach £5,500-£8,500 supply-only.
Question 2What is the most common failure with the Mercedes M272 engine-
The most documented failure pattern for the M272 is balance shaft sprocket wear and timing chain stretch, typically occurring between 60,000 and 100,000 miles. Early warning signs include a distinct metallic rattling noise on cold starts and check engine lights for camshaft correlation faults, and if ignored, the chain can jump teeth, causing catastrophic valve-to-piston contact.
- Early warning signs include a distinct metallic rattling noise on cold starts and check engine lights for camshaft correlation faults.
- If ignored, the chain can jump teeth, causing catastrophic valve-to-piston contact.
Question 3Which Mercedes models use the M272 engine-
The M272 is fitted to Mercedes-Benz core models from 2004 to 2011, including the C-Class (W203, W204), E-Class (W211, W212), CLK (C209), CLS (C219), S-Class (W221), and ML/GL (W164). It powers badges ranging from the C230 and E280 to the S350 and ML350, and you should always verify your exact sub-code via registration lookup before ordering parts.
- It powers badges ranging from the C230 and E280 to the S350 and ML350.
- You should always verify your exact sub-code via registration lookup before ordering parts.
Question 4Should I buy a used or reconditioned Mercedes M272 engine-
A reconditioned Mercedes M272 is strongly recommended over a used unit due to the well-documented balance shaft sprocket and timing chain failure risks. Used units carry a high probability of inheriting the same latent wear unless accompanied by stamped proof of a full chain and sprocket kit replacement, whereas a proper reconditioned M272 includes new, updated balance shaft sprockets, a full timing chain kit, and refreshed cooling components as standard.
- Used units carry a high probability of inheriting the same latent wear unless accompanied by stamped proof of a full chain and sprocket kit replacement.
- A proper reconditioned M272 includes new, updated balance shaft sprockets, a full timing chain kit, and refreshed cooling components as standard.
Question 5What is the difference between the M272.920, M272.940, M272.950, and M272.960-
The M272.920 is a 2.5L variant, the M272.940 is a 3.0L variant, and the M272.950/M272.960 are 3.5L variants. They all share the same core 90-degree V6 architecture and the same balance shaft vulnerability, but they differ in displacement, intake manifold design, and ECU calibration, meaning they are not direct interchange replacements without extensive modifications.
- They all share the same core 90-degree V6 architecture and the same balance shaft vulnerability.
- However, they differ in displacement, intake manifold design, and ECU calibration, meaning they are not direct interchange replacements without extensive modifications.
Compare Mercedes M272 Engine Prices Today
Get a free, no-obligation comparison for your exact Mercedes M272 engine code and sub-code. Our registration lookup confirms your precise fitment before any quotes are sent, ensuring you receive accurate pricing for your specific vehicle. With reconditioned M272 units starting from an estimated £3,800, comparing specialist quotes takes just two minutes and could save you hundreds on your replacement.
Vetted UK specialists for M272 replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Nationwide delivery plus supply and fit availability
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
Get Free M272 Engine Quotes