Compact Hatch Combines Economic Engine, Simple Maintenance, and Affordable Prices in the Used Market, Attracting Drivers Seeking Reliability, Low Cost per Kilometer, and Adequate Performance for Daily Use.
The Fiat Uno Firefly 1.0 remains among the most economical used hatches in the country, with a fuel consumption of up to 15.1 km/l on the highway with gasoline, and power of 77 hp on ethanol, with listings starting at values close to R$ 34.9 thousand, depending on the condition and mileage.
Launched in Brazil in 2016, the GSE Firefly engine family debuted precisely in the Uno and gradually replaced the old Fire, increasing efficiency and torque at low revs.
Fuel Consumption of the Fiat Uno Firefly According to Inmetro
From the factory, the Uno 1.0 Firefly is rated at 13.1 km/l in the city and 15.1 km/l on the highway when fueled with gasoline, according to the Brazilian Labeling Program (PBEV).
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It weighs less than 820 kg, turns off the engine by itself at traffic lights, and achieves 15 km per liter in the city. Understand why the Renault Kwid 2026 has become the most economical car in Brazil.
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BYD focuses on the Yuan Plus 2027: the SUV gains two motors, jumps to 449 hp, accelerates from 0 to 100 km/h in 3.9 seconds, expands the trunk to 490 liters, and arrives priced at R$ 269,990 with a range of 530 km.
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Experts warn: a dirty car air conditioning filter in winter can accumulate fungi and bacteria, causing allergies, fatigue, and even loss of attention while driving.
With ethanol, the official averages stand at 9.2 km/l and 10.4 km/l, respectively.
The data places it among the most economical compacts of its time, with an “A” rating in the segment.
In independent evaluations published at the time of launch, the PBEV results were confirmed, and in economy-focused driving, reporters even recorded averages exceeding light highway routes.
Still, for comparisons between used vehicles, the valid parameter remains that of Inmetro.

Engine and Performance of the Uno Firefly 1.0
The 1.0 three-cylinder, 6-valve, naturally aspirated, and flex engine delivers 72 hp with gasoline and 77 hp with ethanol, always at 6,250 rpm, in addition to 10.4/10.9 kgfm of torque at 3,250 rpm.
The transmission is manual with five gears, with gearing that favors low revs during cruising to aid in fuel consumption.
The two-valve-per-cylinder architecture and the tuning aimed at low-end torque are notable characteristics of this family.
Although the 1.0 prioritizes efficiency, performance has improved compared to the old Fire 1.0.
In press measurements, the new assembly reduced acceleration times and made urban use smoother, without compromising fuel consumption.
For those seeking more power, the 2017 range also offered the 1.3 Firefly 8V with up to 109 hp, always flex.
Equipment of the Fiat Uno Attractive 2017
The Attractive 1.0 configuration was the entry point for the Uno Firefly 2017, and came standard with electric steering (with City function), air conditioning, front windows and electric door locks, height-adjustable steering wheel, onboard computer, in addition to the mandatory front airbags and ABS brakes.
Features like stability control and hill start assist were available as optional packages and became more common in the 1.3 versions.
In addition to the content, the 2017 Uno received subtle changes to the grille, bumper, and interior trim, along with a new electric steering system and improvements in insulation, enhancing daily comfort without major structural changes.
How Much Does a Used Fiat Uno Firefly Cost

In the used market, listings for the Uno Firefly 2017 vary by version and mileage.
It is possible to find Attractive/Way 1.0 with prices around R$ 34.9 thousand for units with high mileage, while cars with documented maintenance history and lower mileage typically appear in the range of R$ 40 thousand to R$ 50 thousand.
The classifieds show large variations between locations and conditions, with isolated cases below the base price for vehicles with over 200,000 km.
For purchasing decisions, the recommendation is to cross-check the asking price with the mechanical condition of the car in question: maintenance history, tires, clutch, suspension condition, and any bodywork repairs.
Although the Uno has a wide availability of parts and simple maintenance, a budget for post-purchase corrections may negate an apparent initial price advantage.
Versions of the Uno Firefly Available in 2017
Those looking for the 1.0 primarily find the Attractive and Way 1.0 versions.
The former focuses on cost-benefit, while the Way adds an adventurous appeal in its styling and slight aesthetic differences.
Above them, the Way 1.3 and Sporting 1.3 configurations enhanced performance and, in some cases, standard equipment, with an option for the automated transmission GSR/Dualogic in the 1.3 versions.
This version structure marked the 2017 line when the arrival of the Firefly renewed the portfolio.
What to Check in the Mechanics of a Used Uno

For the 1.0 units, it’s worth checking for abnormal noises at idle and excessive vibrations, as the three-cylinder engine requires proper mounts and balancing to run smoothly.
The routine inspection includes spark plugs, cables, filters, and fluids; items that are relatively inexpensive at the network and in specialty retail.
With the manual transmission, a very high clutch pedal or jerks during starts may indicate wear of the assembly.
In high-mileage units, pay attention to the state of the suspension and bushings, which are common in urban use.
Why the Fiat Uno Firefly Attracts Buyers
The combination of low consumption, efficient mechanical set, and essential items meets drivers who prioritize cost per kilometer.
Meanwhile, the durability of the project and the ease of maintenance assist in budgeting, a key point for those who drive a lot.
When closing a deal, which version of the Uno Firefly makes the most sense for your daily use: Attractive/Way 1.0 focused on economy or 1.3 for those who need more power?

Faltou a foto do motor
Trabalho com um desses unos ano 18/19 1.0 ja está com 467700 kms e rodando firme e forte. Excelente carro.
Quero um uno fireflex