Tell us about your car for the What Car? Reliability Survey

The What Car? Reliability Survey is your chance to spill the beans about your car. We value your input and will use it to help consumers choose the most dependable new and used cars...

Reliability survey header

New cars are gaining ever-more-complex safety and connectivity technology, from automatic emergency braking systems to online concierge services that can check where you are going and book you a parking space for when you arrive.

That means there are more things than ever to go wrong, and that's why we value your input into the annual What Car? Reliability Survey.

Our aim is to gather information about the dependability of as many car models as possible and share this with you to help you make the most informed buying choices.

If your car has suffered a fault in the past year, we ask you to tell us which of 14 different areas was affected, how long the car was out of action and, crucially, how much it cost to be fixed. This information is used to create a unique reliability rating for each model. 

The 2019 What Car? Reliability Survey contains data on 218 models from 31 car brands. Complete the 2020 survey now to help us gain ratings for even more car models. 

Click here to complete the What Car? Reliability Survey

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Most reliable small and city cars

3. Dacia Sandero Reliability rating 97.9%

Dacia Sandero 2019 front left urban tracking

The Dacia Sandero is based on an old Renault Clio, meaning it’s full of proven parts. Just 11% of owners reported a fault, most commonly with the battery, then the exhaust, interior trim and non-engine electrics. All Sanderos remained driveable, but some took more than a week to fix and landed owners with bills of up to £100. 


2. Honda Jazz Reliability rating 98.3%

Honda Jazz EX 1.3 i-VTEC Manual

The Honda Jazz has a strong reputation for reliability and backed that up in our survey. Only 11% had a problem and all were minor issues with non-engine electrical systems. All remained driveable and were fixed the same day, although some repairs cost up to £50. 


1. Suzuki Celerio Reliability rating 98.9%

Suzuki Celerio 1.0 Dualjet SZ2

Suzuki Celerio owners don't have much cause to return to Suzuki dealerships. A mere 7% reported a fault with their car, and only the gearbox was affected. While that sounds serious, all cars could still be driven and all were fixed under warranty in less than a week.


Next: More of the most and least reliable cars >>

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