Mercedes Benz E Class 300d Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Mercedes Benz E Class 300d engine specialists. Compare prices on reconditioned, rebuilt and used OM654 diesel engines - supply & fit available nationwide.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £2,800 to £5,500
Used from £1,800 · Reconditioned from £2,800 · Common codes: OM654.920, OM654.930
From £1,800
Tested, bare/short engine
From £2,800
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best Mercedes Benz E Class 300d Replacement Engineto Finding the Best Mercedes Benz E Class 300d Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryMercedes Benz E Class 300d - Engine History & Specs at a Glance
The E 300d badge was reintroduced with the W213 E-Class generation in 2018, positioned as the most powerful four-cylinder diesel in the range. Powered by the OM654 2.0-litre inline-four turbodiesel, it delivered 245 hp and 500 Nm of torque - later upgraded to 265 hp with the EQ Boost mild-hybrid system in 2021.
Variant HistoryMercedes Benz E Class 300d - Engine History & Specs at a Glance
The E 300d badge was reintroduced with the W213 E-Class generation in 2018, positioned as the most powerful four-cylinder diesel in the range. Powered by the OM654 2.0-litre inline-four turbodiesel, it delivered 245 hp and 500 Nm of torque - later upgraded to 265 hp with the EQ Boost mild-hybrid system in 2021.
Mercedes Benz E Class 300d
Fuel TypeDiesel (Euro 6d)
Engine Size2.0L (1,950-1,992 cc)
Power Output Range180-195 kW (245-265 hp)Engine History Timeline
**2018** - W213 E 300d launched with OM654.920 engine 180 kW (245 hp), 500 Nm, rear-wheel drive
**2018-2021** - E 300d available in saloon (W213) estate (S213), and cabriolet (A238) body styles
**2021** - Facelift introduces OM654.930 with EQ Boost mild-hybrid 195 kW (265 hp), 550 Nm
**2021-2023** - E 300d 4MATIC available with 195 kW (265 hp) and 550 Nm
**2023** - W214 generation launched; E 300d badge replaced by E 300de plug-in hybrid diesel in some markets
Key Specs Snapshot
Fuel TypeDiesel (Euro 6d)Engine Size2.0L (1,950-1,992 cc)Power Output Range180-195 kW (245-265 hp)Torque Range500-550 NmYears Produced2018-2023Every engine fitted to the Mercedes E Class 300d is covered below, with UK rebuilt pricing and known failure points.
Mercedes Benz E Class 300d Engine Codes - Specifications & Replacement CostMercedes Benz E Class 300d Engine Codes - Specifications & Replacement Cost
2.0L Diesel (2018-2021)
Power Output180 kW (245 hp) at 4,200 rpmTorque500 Nm at 1,600-2,400 rpmYears Fitted2018-2021 (W213/S213/A238 E-Class)
Compatible Trim Levels
- E 300d (W213)
- E 300d Estate (S213)
- E 300d Cabriolet (A238)
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£1,800-£2,800
Reconditioned
Addressed known issues, tested
£2,800-£4,200
Rebuilt
Full teardown, upgraded internals
£3,200-£5,000
Common Failure
Timing chain wear - a recall was issued for OM654 engines in E-Class (213 platform) vehicles where individual bolts or chain links of the camshaft timing chain might wear under specific driving conditions, potentially leading to chain tear and sudden engine stall. Cold-start rattle is the early warning sign. Camshaft and rocker wear also reported around 100,000 miles.
The OM654 engine that powers the E Class 300d is a modern, efficient diesel that replaced the OM651. While generally robust, timing chain wear and AdBlue system failures are the two most significant concerns. Every rebuilt engine supplied through EnginesMarket includes upgraded components designed to address the original failure point, plus a minimum 12-month unlimited mileage warranty. Below, we break down what these failures cost to fix and when replacement is the smarter option.
Why the OM654 in the E Class 300d Requires Attention
Affected Vehicles
Mercedes E Class 300d (OM654.920 / OM654.930, 2018-2023)
Typical Failure Mileage
80,000 - 120,000 miles
Root Cause
The OM654 uses a timing chain mounted at the rear of the engine. Individual bolts or chain links can wear under specific driving conditions. A recall was issued for certain E-Class (213 platform) vehicles with the OM654 engine due to this issue. Extended oil change intervals and stop-start operation accelerate wear.
Why It Happens
The OM654 uses a timing chain mounted at the rear of the engine. Individual bolts or chain links can wear under specific driving conditions. A recall was issued for certain E-Class (213 platform) vehicles with the OM654 engine due to this issue. Extended oil change intervals and stop-start operation accelerate wear.
Dealer (parts + labour)
£800-£1,200
Specialist (parts + labour)
£400-£700
What it involves
Chain tensioner replacement and wear measurement
Suitability
60,000-80,000 miles; effective if rattle is minimal
1 - 2 daysDealer (parts + labour)
£2,500-£3,500
Specialist (parts + labour)
£1,500-£2,200
What it involves
Replacement of timing chain, tensioner, guides and sprockets - engine-out job on OM654
Suitability
When chain has stretched or rattle persists
1 - 2 daysDealer (parts + labour)
£5,000-£8,000
Specialist (parts + labour)
£3,200-£5,500
What it involves
Supply & fit of rebuilt OM654 with new timing components and upgraded parts
Suitability
When chain has failed causing valvetrain damage
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Preventative - Timing Chain Tensioner & Inspection Minor | £800-£1,200 | £400-£700 | Chain tensioner replacement and wear measurement | 60,000-80,000 miles; effective if rattle is minimal | 1 - 2 days |
 Major - Full Timing Chain Replacement Best Value | £2,500-£3,500 | £1,500-£2,200 | Replacement of timing chain, tensioner, guides and sprockets - engine-out job on OM654 | When chain has stretched or rattle persists | 1 - 2 days |
Full Replacement - Rebuilt Engine Best Value | £5,000-£8,000 | £3,200-£5,500 | Supply & fit of rebuilt OM654 with new timing components and upgraded parts | When chain has failed causing valvetrain damage | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical W213 E Class 300d is worth £18,000-£30,000 depending on condition and mileage【INDUSTRY ESTIMATE】. Given the high residual value of the 300d, a rebuilt engine with warranty is almost always justifiable if the rest of the car is sound. Replacement cost is typically small relative to vehicle value.
Our Recommendation
Our Recommendation
The OM654 timing chain recall indicates this is a known issue - if your E Class 300d is within the affected range, check if the recall work has been completed. The cold-start rattle is your early warning - don't ignore it. A specialist timing chain replacement at £1,500-£2,200 is significantly cheaper than a full engine replacement if the chain fails. Given the £18,000+ value of most W213 E 300d examples, preventative chain work is a wise investment.
Don't Let Engine Failure Write Off Your Mercedes E Class 300d
Whether your E Class 300d is suffering from timing chain rattle, AdBlue system warnings, or camshaft wear, EnginesMarket makes it simple to compare prices from trusted UK Mercedes specialists. Every rebuilt engine in our network includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty and nationwide delivery. Compare prices, choose a specialist, and get back on the road without the main dealer premium.
Compare rebuilt OM654 Mercedes E Class 300d engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Mercedes E Class 300d. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Mercedes E Class 300d Engine ReplacementFrequently Asked Questions
Question 1How much does a Mercedes E Class 300d engine replacement cost in the UK-
Short summary: Supply-only rebuilt OM654 engines range from £3,200 to £5,500 depending on engine code and condition. With specialist fitting, budget £3,600-£6,300 total.
- OM654.920 (E 300d, 245 hp, 2018-2021): rebuilt £3,200-£5,000
- OM654.930 (E 300d, 265 hp with EQ Boost, 2021-2023): rebuilt £3,500-£5,500
- Labour adds £400-£800 depending on specialist location
Question 2What are the signs of timing chain failure in an E Class 300d-
Short summary: Cold-start rattle is the classic early warning sign. A recall was issued for OM654 engines in E-Class (213 platform) vehicles due to timing chain bolt and link wear.
- Rattle on cold start that disappears after a few seconds
- Metallic noises from the rear of the engine
- Loss of power or engine management light
- Timing chain replacement at a specialist costs £1,500-£2,200
Question 3Is it worth replacing the engine on an E Class 300d-
Short summary: Yes, if the car is otherwise sound. W213 E Class 300d examples with good service history still command £18,000-£30,000 used, making replacement viable【INDUSTRY ESTIMATE】.
- A quality rebuilt OM654 costs £3,200-£5,500 supply only
- The 300d is the most powerful four-cylinder diesel in the E-Class range
- A replacement engine with warranty costs less than the depreciation on a newer car
- Specialist fitting adds £400-£800, not dealer rates of £1,500+
Question 4What causes the OM654 timing chain to fail on E Class 300d models-
Short summary: The OM654 timing chain is mounted at the rear of the engine. Individual bolts or chain links can wear under specific driving conditions, leading to a recall for certain vehicles.
- Chain wear typically occurs between 80,000-120,000 miles
- Extended oil change intervals (over 10,000 miles) accelerate wear
- Stop-start operation can exaggerate wear
- Cold-start rattle is the early warning sign
Question 5What is the difference between the OM654.920 and OM654.930 engines in the E Class 300d-
Short summary: Both are 2.0-litre four-cylinder diesels. The OM654.930 (2021-2023) features EQ Boost mild-hybrid technology with 48V starter-generator, producing 265 hp (up from 245 hp) and 550 Nm (up from 500 Nm).
- OM654.920 fitted to E 300d (2018-2021): 180 kW (245 hp), 500 Nm
- OM654.930 fitted to E 300d facelift (2021-2023): 195 kW (265 hp), 550 Nm
- Both share the same 82mm bore × 92.3mm stroke
- Both suffer from the same timing chain wear concerns
Question 6How long does a Mercedes E Class 300d engine last-
Short summary: With proper maintenance and 8,000-10,000 mile oil changes, OM654 engines regularly reach 200,000-300,000 miles.
- OM654 is a modern, efficient diesel with robust bottom end
- Timing chain inspection/replacement at 80k-100k miles is recommended
- Regular AdBlue system maintenance prevents costly tank replacement
- Short oil change intervals (8k miles) are critical for timing chain life
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