The Fiat Uno gearbox was fitted to one of the Italian manufacturer's most iconic city cars. Produced between 1983 and 1995 and sold in excess of 10 million units worldwide, the Fiat Uno was offered with a wide range of engines, from the modest 45 bhp entry-level unit to the turbocharged versions producing 105 or 118 bhp. Each engine came with its own transmission, which is precisely why identifying the correct gearbox matters so much.
Identifying which gearbox your Fiat Uno is fitted with, spotting the signs of a fault, and choosing between repair and replacement: follow the EDEN BOITES guide to get to grips with it all.
Which gearbox does your Fiat Uno have?
The early manual gearboxes fitted to the Fiat Uno were not particularly well regarded by drivers. Entry-level models, such as the Uno 0.9 and 1.1 litre, came with a 4-speed manual Type 146 gearbox. More powerful versions, particularly those fitted with a turbocharged engine, received a 5-speed manual Type 146.C.0 gearbox.
From 1989 onwards, Fiat updated its transmission line-up with the Type C514 manual gearboxes, which gained a reputation for being more user-friendly and more reliable, and can be found on models such as the Fiat Uno 1.7 Diesel. From the 1980s, the manufacturer also offered a Selecta automatic gearbox with continuously variable transmission, delivering smooth gear changes and a more relaxed driving experience. To browse available references, take a look at our gearbox catalogue.
The most common faults on Fiat Uno gearboxes
Whether manual or automatic, the gearbox plays a central role in your Fiat Uno's drivetrain. Several warning signs point to a fault:
- difficulty selecting gears;
- unusual noises when engaging gears;
- a transmission oil leak;
- a slipping sensation.
The most common cause is low oil level. Checking the level regularly and topping up as needed — after verifying the correct product reference — is the first step in routine maintenance. The oil should also be subject to periodic changes to prevent a build-up of deposits, sometimes accompanied by an inspection of the gearbox and replacement of the filters. Finally, natural wear of components — sooner or later depending on your driving style and the regularity of servicing — affects every part over time.
Addressing faults on your Fiat Uno gearbox
When a fault arises, the safest course of action is to book an appointment with your mechanic. Repairing a manual or automatic gearbox is a complex job that demands skill and experience, and is the best guarantee of a lasting, safe result.
If you would still like to investigate the source of the problem yourself, you will need to inspect the gearbox closely. Raise the vehicle and remove any components obstructing access. Disconnect the wiring and linkages, remove the mounting bolts, then carefully lower the gearbox, taking care not to damage the engine. Once the unit is out, inspect the seals for leaks and examine the components for any signs of wear. Once the faulty part has been identified, replace it before refitting the gearbox in its original position.
Where to find a new gearbox for your Fiat Uno?
When the gearbox is too badly damaged or the cost of repair becomes too high, replacement on an exchange basis is the most sensible solution. EDEN BOITES offers a wide range of reconditioned Fiat gearboxes, rebuilt by its own experts, and takes back your old gearbox as part of the deal. All that remains is to have it fitted by a mechanic. Browse the available models in our Fiat catalogue, and if you are unsure whether to go for a manual or the Selecta automatic, our guide on the differences between manual and automatic gearboxes will help you decide.
Frequently asked questions
How do I know which gearbox my Fiat Uno has?
It depends on the engine and the year: Type 146 on small-capacity models, 146.C.0 on turbocharged versions, C514 from 1989 onwards, or Selecta for the automatic. EDEN BOITES can help you identify the correct reference.
Is an oil leak serious?
It should be dealt with promptly, as low oil level is the leading cause of gearbox failure. A worn seal or a loose filler plug is often to blame.
Can I remove the gearbox from a Uno myself?
It is possible with the right tools and a methodical approach, but it is a delicate job. For a reliable and safe result, having the work carried out by a professional is strongly recommended.
Repair or replace: which should I choose?
On a heavily worn gearbox, an exchange unit often works out less expensive than a major repair, whilst also guaranteeing a fully reconditioned part.
Why choose EDEN BOITES?
At EDEN BOITES, every Fiat Uno gearbox is reconditioned and tested before going on sale, then offered on an exchange basis with a warranty of up to 24 months. Payment can be spread over up to 10 instalments, and delivery covers France and the European Union, with a lead time confirmed on quote. Our exchange units are also covered by a satisfaction or money-back guarantee, subject to our Terms and Conditions. Want to read more? Take a look at our guides on troubleshooting the Fiat Punto gearbox and repairing the Fiat Tipo gearbox. To find the right gearbox for your Uno, browse our Fiat range now.
