56
verified 2012 mercedes engines
2012 Used Mercedes Engines For Sale
56 verified 2012 Mercedes engines in stock, spanning twelve model lines — E Class (212 Type sedan/wagon, 207 Type coupe/cabriolet), S and SL Class (221 and 230 Type), C Class and GLK (204 Type), ML Series (166 Type), CL (216 Type), CLS (218 Type), GL (164 Type), SLK (172 Type), R Class (251 Type), and the 463 Type G550. Every unit is VIN-matched to your vehicle, compression-tested by ASE-certified technicians, photographed before shipment, and backed by up to a 3-year warranty plus 30-day money-back. Free freight nationwide.
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Compression-Tested & Verified
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Free Nationwide Shipping
Browse 2012 Mercedes Engines by Model
Match your 2012 Mercedes engine by vehicle. Use the cards below to identify the right line and chassis Type code — 2012 is a year where one Type code can carry two model lines (the 204 Type runs both the C Class and the GLK), so the badge on the trunk is not enough on its own. Every unit is then VIN-matched at the order step.
2012 E Class
212 Type sedan & wagon plus 207 Type coupe & cabriolet — E350 (gasoline or diesel), E550, and the AMG E63. The widest 2012 Mercedes line: check body style and the Type code before ordering.
2012 S Class
221 Type S350, S400 hybrid, S550 (RWD/AWD), S600, and S63. A few 230 Type SL550/SL63 units are cataloged here too — trust the Type code, not the badge.
2012 SL Class
230 Type SL550 and SL63 roadsters. Several 221 Type S-Class units (S350/S400/S550/S600/S63) are cross-cataloged under this line — go by the Type code.
2012 C Class
204 Type C250, C300, and C350 in sedan and coupe, RWD and AWD. The C250 turbo four and C350 V6 are entirely different engines — VIN confirms which.
2012 ML Series
166 Type ML350 (gasoline or diesel), ML550, and the AMG ML63. 2012 is the 166 Type's launch year; the diesel and gasoline ML350 do not interchange.
2012 CL Class
216 Type CL550, CL600, and CL63. The big coupe is late in its run — the CL600 V12 is the rarest engine on this page.
2012 CLS
218 Type CLS550 in RWD and AWD, plus the AMG CLS63. The 218 Type four-door coupe is new for 2012.
2012 GL Class
164 Type GL350 (diesel), GL450, and GL550. Final season for the 164 Type GL before the 166 Type redesign.
2012 SLK
172 Type SLK250 and SLK350. The 172 Type debuts for 2012, and the SLK250 is the only 2012 Mercedes engine here offered with a factory manual transmission.
2012 GLK Class
204 Type GLK350 in AWD and RWD. Shares the 204 Type code with the C Class — confirm the model line, not just the Type.
2012 R Class
251 Type R350 in gasoline (276.958 type) and diesel (642.870 type). The R Class appears only in this year across our built Mercedes range.
2012 G Class
463 Type G550. The long-running G-Wagen V8 — a single verified fitment in stock.
Why Buy a 2012 Mercedes Engine from Auto Power Source
Every 2012 Mercedes engine we list is pulled from an inventory-verified donor vehicle, cataloged against its chassis Type code and donor VIN, and held in our climate-controlled warehouse pending sale. Each unit clears our six-step inspection — VIN-matching, compression testing, noise & smoke verification, full visual inspection, multi-angle photography, and palletized freight.
2012 is a year that punishes guesswork: the 166 Type ML350 ships in both gasoline and diesel, the 251 Type R350 does the same, the 204 Type covers both the C Class and the GLK, and a number of S and SL Class units are cataloged under each other's badge. Our ASE-certified technicians compression-test every cylinder and run a leak-down evaluation before any 2012 Mercedes engine is cleared for sale. You pay a fraction of dealer-new pricing for identical Mercedes-Benz engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and get up to a 3-year warranty plus 30-day money-back. Not sure which 2012 variant fits? Text your VIN and we will confirm.
📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →
Your 2012 Mercedes Engine Options: Compared
Most 2012 Mercedes owners face four real choices when their engine fails:
← Swipe sideways to see all columns →
| Option |
Cost |
Reliability |
Warranty |
Fitment Match |
| Used OEM (this collection) |
$$$ Best Value |
High |
Up to 3 years |
VIN-matched |
| New OEM (dealer) |
$$$$$ 2-4× more |
High |
Manufacturer |
Exact |
| Aftermarket / Reman |
$$$$ |
Varies |
6-12 mo |
May adapt |
| Junkyard |
$ Cheapest |
Unknown |
None |
DIY |
Tested used OEM hits the sweet spot — same Mercedes-Benz engineering as new, fraction of the cost.
2012 Mercedes Engine Buying Guide
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Start with the chassis Type code, not the badge. Mercedes catalogs 2012 engines by Type — 212, 207, 221, 230, 204, 166, 216, 218, 164, 172, 251, 463. The Type code is what determines the engine, and several 2012 S and SL Class units in this inventory are cataloged under each other's line.
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Separate gasoline from diesel. The 166 Type ML350 and the 251 Type R350 each ship in both, and the diesel (642.870 type) and gasoline (276.958 type) R350 engines do not interchange in either direction.
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Confirm body style within the line. The 2012 E Class alone spans a 212 Type sedan and wagon plus a 207 Type coupe and cabriolet; accessories, mounts, and harnesses differ across them.
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Match drivetrain (RWD vs AWD). The 2012 C Class, E Class, S Class, CLS, and GLK all ship both ways — 4MATIC units carry different sumps, mounts, and accessory routing.
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Always run the donor VIN if available. We provide it on request for any engine in our inventory to verify mileage and history.
Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.
Frequently Asked Questions
What is the warranty on a 2012 Mercedes engine?
Up to 3 years, depending on the specific unit. The exact warranty term is listed on each product page.
What does compression-tested mean?
ASE-certified technicians compression-test every cylinder and run a leak-down evaluation before the engine is cleared for sale.
How long until delivery?
Prep and ship time is 3-5 business days. Transit time is 2-3 business days via freight carrier after dispatch.
Can I see photos before I buy?
Yes. Multi-angle photos of the actual unit are sent before payment.
Do I need my VIN?
Strongly recommended. 2012 Mercedes engines vary by chassis Type code, body style, drivetrain, and fuel — and the 204 Type alone carries both the C Class and the GLK.
What if I do not approve the photos?
Every dollar back — no restocking fees, no return freight charges.
46,000+
engines + transmissions shipped
0%
fitment-related returns
All 50
states covered, free freight
Excellent
Customer Reviews
rated on Trustpilot
Our 6-Step Inspection & Shipping Process
Every 2012 Mercedes engine we ship has been through these six steps:
1. VIN-MatchingWe match the donor VIN to your VIN to confirm engine code, emissions calibration, and drivetrain fit.
2. Tested & VerifiedASE-certified technicians compression-test every cylinder and run a leak-down evaluation on each engine.
3. Noise & Smoke VerificationUnits are run to verify normal mechanical sound and clean operation — catches wear static tests miss.
4. Visual InspectionEvery accessible component is inspected: turbos, manifolds, valve covers, accessories, sensor harnesses.
5. Photograph & CatalogMulti-angle photos sent to you BEFORE we ship, for your approval.
6. Palletize & ShipStrapped on a heavy-duty wooden pallet, shipped via freight at no charge.
What Our Customers Say
Rated Excellent by our customers on Trustpilot.
★★★★★
Transaction was perfect
"Found me the right engine at a great price. Got it in 2 days and installed the car the next day. Runs absolutely beautiful."
— Kevin Graham, 2026-04-29
★★★★★
Repeat customer
"AutoPowerSource is a great company. I've used them several times for used motors. Low mileage when other companies gave up."
— Curtis Haines, 2025-12-23
★★★★★
Highly recommend Mike
"Mike reached out first thing in the morning regarding my inquiry for a used engine. Very informative and helpful."
— Beatrice, 2026-03-31
★★★★★
Great experience
"Daisy kept me in the loop every step. My original engine was damaged before shipping; she found a different one quickly."
— Bryan Perkins, 2026-03-25
Our Photos-Before-Shipment Guarantee
Before any 2012 Mercedes engine leaves our warehouse, we send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and up to a 3-year warranty.
✉ Email Us at info@autopowersource.com
