The short answer
The Alfa Romeo Giulia offers power, while the Audi A4 excels at fuel economy instead. Choose the Alfa Romeo Giulia if you prioritize power in daily driving, or the Audi A4 if fuel economy matters more for your needs. Both are covered by real owner reports on CarWizz.
Overall
Owners overwhelmingly praise the Giulia's exceptional handling, steering feel, and unique character, often calling it the best-driving sedan in its class. However, this enthusiasm is tempered by widespread frustration with high maintenance costs, a poor dealership experience (especially at shared CDJR locations), and persistent reliability concerns, particularly for early model years. The Quadrifoglio is celebrated as a thrilling performance car, but its reputation for issues and steep depreciation is a recurring theme.
Best version to buy
The Quadrifoglio (QV) is the most praised version for its performance and driving experience, but owners caution that early model years (2017-2019) are risky. The 2.0T Veloce/Ti Sport is well-regarded for daily driving, though some wish for a mid-range V6 option between the base and QV.
Known issues
Overall
Sentiment is sharply divided by generation and is heavily dependent on diligent maintenance. The B9 generation (model years approximately 2017-2023) receives a generally positive to mixed assessment, with owners praising its refined driving dynamics, comfortable and premium-feeling interior, and the reliability of its EA888 Gen 3 2.0T engine when properly maintained. It is frequently described as a great daily driver that is enjoyable to drive.
Best version to buy
B9 Generation (2017-2023) with the EA888 Gen 3 2.0T engine. This powertrain is repeatedly cited as one of the more reliable Audi engines overall, with known, manageable issues.
Known issues
The verdict
The Audi A4 is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Alfa Romeo Giulia, based on the data above. If power matters more to you than running costs, the Alfa Romeo Giulia is worth a closer look instead.
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Which is more reliable, the Alfa Romeo Giulia or the Audi A4?
Owner reports show similar reliability sentiment for the Alfa Romeo Giulia and the Audi A4. Check the known issues listed above for specific differences between the two.
Which is better for families, the Alfa Romeo Giulia or the Audi A4?
The Audi A4 seats more passengers than the Alfa Romeo Giulia on its catalogued best-equipped version. Body type also differs: the Alfa Romeo Giulia is classed as a Sedan, the Audi A4 as a Sedan.
Which has better fuel economy, the Alfa Romeo Giulia or the Audi A4?
The Audi A4 is more fuel-efficient on paper: 5.6-6.0 L/100km combined versus 11.8 L/100km for the Alfa Romeo Giulia, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Alfa Romeo Giulia or the Audi A4?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Audi A4 than the Alfa Romeo Giulia. See the known issues comparison above.