---
title: "Independent Motor Repair Audits in Mexico | Grupo Marro | Grupo Marro"
meta:
  "og:description": "The only EASA AR-certified repair shop in Mexico performs independent, third-party audits of motor repair work against EASA AR100-2020 and issues a formal report."
  "og:title": "Independent Motor Repair Audits in Mexico | Grupo Marro"
  "twitter:description": "Third-party verification of motor repair work against the EASA AR100-2020 standard, by Mexico's only EASA AR-certified shop."
  "twitter:title": "Independent Motor Repair Audits in Mexico | Grupo Marro"
  author: "Grupo Marro"
  description: "Had electric motors repaired by a vendor in Mexico and need to know the work meets best practice? Grupo Marro — the only EASA AR-certified repair shop in Mexico — performs independent, third-party audits against the EASA AR100-2020 standard and issues a formal report."
  keywords: "motor repair audit, EASA AR100-2020 verification, third-party motor inspection Mexico, electric motor repair quality audit"
---

![Independent electrical testing during a motor repair audit](https://marro.mx/cdn-cgi/image/q=30/photos/megger_en_accion_02.jpg)

**The only EASA AR-certified repair shop in Mexico **

# **Independent audits of your motor repairs **

Had electric motors repaired by a vendor in Mexico and need to be sure the work meets best practice? We verify it independently against the EASA AR100-2020 standard — and put it in a report you can act on.

[**Request an audit **](https://marro.mx/en/contacto?source=motor-repair-audit)

## **When you can't tell if the repair was done right**

An international company has critical motors serviced by a repair shop in Mexico. The motor runs when it comes back — but did the repair actually restore its efficiency and reliability, or just get it turning again?

A poor rewind, an overheated core, the wrong insulation class or undocumented testing won't show up on day one. They show up months later as wasted energy, premature failure and unplanned downtime. An independent audit against [**the EASA AR100-2020 standard**](https://marro.mx/en/certificacion-easa-ar1000) removes the guesswork.

## **What the audit covers**

We assess the repair the way EASA AR100-2020 expects it to be done — from the rewind data sheet to the final tests.

### **Repair records & rewind data**

Review of the rewind data sheet, winding design, turns/connection, materials and insulation class against the motor nameplate and EASA AR100-2020 expectations.

### **Electrical test reports**

Verification of insulation resistance / polarization index (IEEE 43), surge comparison, hi-pot, winding resistance and balance — what was tested, how, and whether results are within spec.

### **Core & thermal integrity**

Core-loss testing and evidence that the stator core was not damaged during burnout — temperatures controlled, never overheated, per EASA good practice.

### **Mechanical & dimensional checks**

Bearing fits and tolerances, shaft and housing dimensions, runout, balancing records and assembly workmanship.

### **Materials & VPI process**

Confirmation of insulation system class, magnet wire, and that varnish treatment / VPI impregnation and oven curing were performed correctly.

### **Documentation & traceability**

Whether the repair is properly documented, traceable, and supports the efficiency and reliability the equipment should deliver after repair.

## **How the engagement works**

A clear, documented process that ends with an independent verdict you can share internally and with your supplier.

**01**

### **Scope & intake**

We agree on which motors/repairs to review and gather the available repair documentation, test reports and nameplate data.

**02**

### **Document review**

Our EASA AR100-2020-certified engineers assess the repair records against the standard and recognized industry practice.

**03**

### **On-site / in-shop inspection**

Where needed, we inspect the motor(s) and witness or repeat key tests — on your site or at our facility.

**04**

### **Formal audit report**

You receive an independent written report: findings, conformities and non-conformities, risk to reliability, and clear recommendations.

**05**

### **Debrief**

We walk you and your supplier through the findings so corrective actions are unambiguous and actionable.

## **Why Grupo Marro**

Many shops in Mexico are EASA members; we are the only one that is EASA AR-certified. That certification is precisely what makes our audit credible — we hold others to the same standard we are held to.

### **EASA AR100-2020 certified**

Certified to the EASA standard for electric motor repair.

### **ISO 9001:2015**

Quality-managed processes and traceable documentation.

### **35+ years of repairs**

Decades of industrial motor repair across heavy industry.

## **Frequently asked questions**

## **Get an independent verdict on your motor repairs**

Tell us what was repaired and where. We'll scope an EASA AR100-2020 audit and give you a clear, documented answer.

[**Request an audit **](https://marro.mx/en/contacto?source=motor-repair-audit) [** +52-811-975-1361 **](https://wa.me/528119751361)

[ventas@marro.mx](https://marro.mx/mailto:ventas@marro.mx)

Monterrey, Mexico