Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 SL450.
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Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 49 · 850 CCA; Auxiliary: 170 CCA battery, OE oil filter 0209975445. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 0209975445 alt 2761800009 |
| Engine air filter | 276094050490 |
| Fuel filter | 1724700400 |
| Battery | 2115410001 alt 0019828208 |
| Front wiper blades | 2318200945 alt 2318201045 |
| Thermostat | 276201068064 alt 2762000600 |
Engine, drivetrain, dimensions and economy.
| Overall length | 182.3 in |
| Overall width | 74 in |
| Overall height | 52 in |
| Wheelbase | 102 in |
| Curb weight | 3825 lb |
| Track (front / rear) | 63 / 63 in |
| Weight distribution (front / rear) | 50/50 |
Capacities, torques and tune-up values from the factory service manual.
Torque lug nuts to 96 ft-lbs, the oil drain plug to 20.0 ft-lbs. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.
| Crankshaft Position (CKP) Sensor Bolt(s) | 7.4 ft-lbs |
| Camshaft Position (CMP) Sensor Bolt(s) | 7.4 ft-lbs |
| Intake Manifold to Engine Bolts | 6.6 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 14.7 ft-lbs |
| Oil Pan to Block Bolts | 9.0 ft-lbs |
| Engine Oil Pan Drain Plug | 20.0 ft-lbs |
| Lug Nuts | 96 ft-lbs |
| Spark Plug Manufacturer | Mercedes-Benz |
| Spark Plug Gap | .031 in |
| Spark Plug Torque | 17 ft-lbs |
| Standard BCI Group Number | 49 |
| Standard BCI Cranking Performance | 850 cca; Auxiliary: 170 cca |
| Engine Compression | 174 |
| Brake Caliper Bolt to Carrier Torque | Front: NS; Rear: 26 |
| Brake Caliper Carrier to Hub Bolt Torque | Front: NS: Rear: 81 |
| Vented Rotor Minimum Thickness for Replacement | Front: 1.181; Rear: .843 |
| 1 | 148.0 ft. lbs., Step 2: 180 | 148 ft. lbs |
Prep Do not reuse old bolts. Coat new bolts lightly with specified motor oil.
| 1 | Bolts 1-8 15.0 ft. lbs. | 15 ft. lbs |
| 2 | Bolts 1-8 | 29.5 ft. lbs |
| 3 | Bolt 1-8 | 90 degrees |
| 4 | Bolts 1-8 90 degrees | 90 degrees |
| 5 | Bolts 9 10.0 ft. lbs. | 10 ft. lbs |
| 1 | 15.0 ft. lbs., Step 2: 33.0 ft. lbs., Step 3: 90 | 15 ft. lbs |
| 1 | 44.0 inch lbs., Step 2: 15.0 | 44 in |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 1 of 1 campaigns on record for this vehicle.
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018 SL65 AMG, 2019 SL63 AMG and 2018-2019 SL450 and SL550 vehicles. The front passenger air bag may have been improperly sewn, allowing the seam to tear during… Remedy: MBUSA will notify owners, and dealers will replace the passenger air bag, free of charge. The recall began December 13, 2019. Owners may contact MBUSA customer service at…
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
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NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.