Engine overhaul 1.4 TSI / TFSI CNWA (EA111) replacement engine

Engine rebuild 1.4 TSI / TFSI CNWA (EA111) replacement engine — better than factory

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

MIK upgrades — why this engine lasts longer

The 1.4 TSI/TFSI (EA111) has specific engine-side weak points that we know from many 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 does not deliver enough oil pressure from the factory and repeatedly leads to failures. Without sufficient oil pressure, error messages, rattling noises, and loss of power 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 RPM range and protects the engine from wear.
• Reinforced pistons — When tuned for more power or driven aggressively, this engine is more prone to piston damage in the ring land area. Oil consumption of 0.5L/1000km or more is not uncommon, and compression as well as power drop noticeably. The increased 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 a remedy.
• High-quality bearing shells — As part of the overhaul, all components are precisely measured and machined. The bearing clearance between the individual components is set for lifetime and performance, ensuring especially smooth engine running. Combined with high-quality bearing shells, this engine is then also ideally suited for the sporty driver.
• Reinforced timing chain kit — 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.

Rebuild scope — nothing left out

• Main bearings, connecting rod bearings, thrust washers
• Pistons & piston rings
• Cylinder liners
• Connecting rods
• Crankshaft (for full overhaul)
• Bearing journal (for full overhaul)
• Oil pump
• Timing chain kit / timing drive (complete)
• Shaft seals
• Cylinder head gasket & bolts
• Reface sealing surfaces
• Valves, guides, stem seals
• Hydraulic lifters & roller rocker arms
• Camshafts (for full overhaul)
• Cam phasers (for full overhaul)
• Oil jets
• 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 placing your order.

Variants & prices

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

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