Engine Overhaul 1.4 TSI / TFSI CMSA (EA111) Replacement Engine

Engine overhaul 1.4 TSI / TFSI CMSA replacement engine — better than new

The 1.4 TSI/TFSI (EA111) with engine code CMSA is a widely used power unit from the VAG Group (VW, Audi, SEAT, Skoda) — with known weak points that regularly show up at high mileage or with sporty driving. MIK Motoren does not simply rebuild this engine back to factory standard, but specifically eliminates the design weaknesses of the original. The result: a replacement engine that is better than new.

MIK upgrades — why this engine lasts longer

The 1.4 TSI/TFSI (EA111) has engine-specific weak points that we know well from years of hands-on experience. Our upgrades are not a marketing gimmick — they are the direct answer to the most common failure patterns.

• Upgraded oil pump — The biggest weak point of this engine is its oil pump, which from the factory does not generate enough oil pressure and repeatedly leads to failures. Without sufficient oil pressure, warning messages, rattling noises, and loss of performance quickly become noticeable and almost always lead to engine damage. For this reason, we use a specially developed oil pump that increases oil pressure across every engine speed range and protects the engine from wear.
• Reinforced pistons — When tuned for more power or driven hard, this engine is increasingly prone to piston damage in the ring area. It is not uncommon for oil consumption to reach 0.5L/1000km or more, while compression and performance drop noticeably. The higher temperature in the combustion chamber then puts particular strain on the pistons and valves. Modified pistons, improved piston rings, and a specially honed cylinder surface provide the remedy.
• High-quality bearing shells — During the overhaul, all components are precisely measured and machined. The bearing clearance between the individual components is set for lifetime and performance, ensuring particularly smooth engine operation. Combined with high-quality bearing shells, this engine is then also ideally suited for the performance-oriented driver.
• Reinforced timing chain set — The increased wear of the timing chain is largely related to the chain's design and the freedom of movement of the chain links on the guide rails. A modified chain design, along with a special guide rail geometry, ensures maximum lifetime of the timing chains in this engine.

Overhaul scope — nothing more is possible

• Main bearings, connecting rod bearings, thrust washers
• Pistons & piston rings
• Cylinder bores
• Connecting rods
• Crankshaft (for full overhaul)
• Bearing saddle (for full overhaul)
• Oil pump
• Timing chain set / timing drive (complete)
• Shaft seals
• Cylinder head gasket & bolts
• Resurface sealing surfaces
• Valves, guides, valve stem seals
• Hydraulic tappets & roller cam followers
• Camshafts (for full overhaul)
• Camshaft adjusters (for full overhaul)
• Oil spray nozzles
• Oil pan & timing cover
• Ultrasonic cleaning of all components
• Grinding, honing & polishing
• LIVE documentation via app

Vehicle compatibility

This replacement engine is compatible with: VW Golf V/VI, Polo, Touran, Tiguan; Audi A1, A3; SEAT Leon, Ibiza; Skoda Octavia, Fabia. If you have any questions about vehicle compatibility, please ask before ordering.

Variants & prices

Partially overhauled / No additional service: from €3819.00 | Partially overhauled / Removal & installation: from €7408.00 | Partially overhauled / Vehicle collection + removal & installation: from €8565.00

All prices include VAT. Shipping and installation options selectable. Replacement engine delivery available on request.