Demystifying Certificates of Conformity for Cars

If you own a car that's a few years old, you may be wondering if it meets the latest emissions standards for driving in low emission zones. Obtaining a Certificate of Conformity (CoC) from the manufacturer is the best way to find out. But the process and pricing for CoCs varies wildly between automakers. This blog breaks it down so you don't have to.

What Are Certificates of Conformity?

A CoC is a document issued by a vehicle manufacturer that specifies the emissions standards the car met when it was first registered. For example, a CoC may state that a car meets Euro 6 emissions standards for diesel vehicles:

• 1.50 g/km carbon monoxide (CO)
• 2.080 g/km nitrous oxides (NOx)
• 3.005 g/km particulate matter (PM)

The standards differ for diesel and petrol cars. Having a CoC can exempt your car from charges or restrictions in low emission zones if it meets the latest standards.

Why Do CoC Prices Vary So Much?

Some manufacturers provide CoCs for free, while others charge over £100. Here's a breakdown of prices from major brands:

• Free CoCs: Mini, BMW
• £75: Toyota, Lexus
• £100-150: Renault, Mercedes, Fiat
• €220: Citroen, Peugeot, Opel, Vauxhall

The process also varies between simple email requests to filling out lengthy forms.

How to Get a CoC for Popular Brands

Here are the specifics for getting a CoC from major manufacturers:

• Mini: Email eccoc@bmw.co.uk. Quick and free.
• BMW: Also email eccoc@bmw.co.uk. Free for UK registered vehicles.
• Ford: Email a blank email to coc@forddac.co.uk for instructions. Free.
• Toyota/Lexus: Fill out the form here and email to coc@toyota.co.uk or coc@lexus.co.uk with your V5C registration. £75 fee.
• Mercedes: Apply online here. £144 fee.
• Citroen, Peugeot, Opel, Vauxhall: Apply at coc.psa-peugeot-citroen.com. €220 fee.

Avoid Third Party Websites

Some third party sites claim to provide CoCs for a fee, but often charge much more than going directly to the manufacturer. Always check the automaker's website first before using a third party service. You'll get the same CoC for less.

Getting a Certificate of Conformity takes some legwork, but it can provide proof your car meets emissions standards and potentially save you money down the road. Now you know where to go to get CoCs for all the major brands. Happy emissions testing!