Alfa Romeo
Giulia
Owner report available
BMW
4 Series
Owner report available
Alfa Romeo Giulia vs BMW 4 Series
The short answer
Based on available data, the Alfa Romeo Giulia comes out ahead of the BMW 4 Series on power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
Giulia
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
- - Brake-by-wire system lurching and poor modulation: Frequency: recurrent. Mostly reported on 2017 models; later years improved. - Infotainment lag, low-resolution backup camera, no touchscreen on early models: Frequency: recurrent.
4 Series
Overall
Sentiment is mixed and heavily dependent on the specific model, engine, and generation. For the F-generation (e.g., 428i, 430i, 435i, 440i), owner feedback is generally positive regarding driving dynamics, styling, and the overall package of technology and comfort. These cars are frequently described as "amazing," "solid," and "great all-rounders" that offer a satisfying blend of performance and luxury features.
Best version to buy
Models equipped with the B58 inline-six turbocharged engine (e.g., 435i, 440i, M440i) receive the most consistent praise for performance, smoothness, and being a "great drivetrain." The M440i with its mild-hybrid system is specifically noted for its refined start-stop and improved low-end response. For the F-generation, the 435i is frequently mentioned as a desirable and reliable powertrain choice.
Known issues
- High cost of ownership and unexpected repairs: budgeting $1,000-$3,000+ annually for maintenance and repairs is frequently mentioned, with major services (e.g., timing chain) potentially costing $4,000-$5,000. Frequency: very frequent.
- N55/B58 engine oil filter housing cracking: a well-known issue on certain engines, particularly noted on the N55. Frequency: recurrent.
- Timing chain rattle on cold start (4-cylinder engines): specifically mentioned for the 2.0L petrol engines, a sign of potential wear. Frequency: recurrent.
The verdict
The Alfa Romeo Giulia is the better choice for most buyers.
It has more power on its best-equipped version than the BMW 4 Series, based on the data above. If efficiency matters more to you than outright power, the BMW 4 Series is worth a closer look instead.
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Common problems by model year
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Frequently asked questions
Which is more reliable, the Alfa Romeo Giulia or the BMW 4 Series?
Owner reports show similar reliability sentiment for the Alfa Romeo Giulia and the BMW 4 Series. Check the known issues listed above for specific differences between the two.
Which is better for families, the Alfa Romeo Giulia or the BMW 4 Series?
The BMW 4 Series 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 BMW 4 Series as a Coupe.
Which has better fuel economy, the Alfa Romeo Giulia or the BMW 4 Series?
The EPA rates the 2026 Alfa Romeo Giulia at 26–27 mpg combined and the 2027 BMW 4 Series at 27–31 mpg, depending on the version.
Which is cheaper to maintain, the Alfa Romeo Giulia or the BMW 4 Series?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the BMW 4 Series than the Alfa Romeo Giulia. See the known issues comparison above.