At a Glance: 2026 BMW 3 Series vs. 2026 Audi A5 and S5
The premium sport sedan segment has two heavyweights competing for attention in Montreal: the 2026 BMW 3 Series and the all-new 2026 Audi A5 lineup, which now includes the performance-focused S5. The 3 Series carries five decades of driver-focused heritage with two well-defined trims -- the 330i xDrive and the M340i xDrive. Audi answers with the redesigned A5 and a sportier S5 above it. Both are premium German sedans, but they take very different paths to deliver the drive.
This guide compares the two head-to-head: 330i xDrive against A5 at the entry point, and M340i xDrive against S5 at the performance end. Whether your week revolves around the Décarie Expressway or weekend escapes off the Métropolitaine, by the end you will know which sedan belongs in your driveway.
| Specification | BMW 330i xDrive | Audi A5 | BMW M340i xDrive | Audi S5 |
|---|---|---|---|---|
| Engine | 2.0 L turbo 4-cyl (48V) | 2.0 L turbo 4-cylinder | 3.0 L turbo I-6 (48V) | 3.0 L turbo V6 |
| Horsepower | 255 hp | 268 hp | 386 hp | 362 hp |
| 0--100 km/h | 5.6 s | 5.9 s | 4.3 s | 4.6 s |
Entry Point Showdown: 330i xDrive vs Audi A5
At the four-cylinder level, the 330i xDrive and Audi A5 are textbook rivals. Both target the same Montreal buyer who wants a premium sport sedan without stepping up to six cylinders. While the Audi A5 produces 268 hp, the BMW 330i xDrive reaches 100 km/h in 5.6 seconds -- a tick ahead of the A5's 5.9 seconds. The BMW's 8-speed automatic delivers smoother gear changes in everyday driving than the dual-clutch in stop-and-go traffic on the Décarie.
Performance Showdown: M340i xDrive vs Audi S5
The M340i xDrive produces 386 hp from its 3.0 L turbocharged inline-six, outclassing the Audi S5's 362 hp. The math is clear: the BMW has 24 more horsepower and reaches 100 km/h three-tenths of a second quicker (4.3s vs 4.6s). The BMW also delivers what an inline-six does best -- smooth, linear power delivery and a sound profile that has earned a cult following.
All-Road Grip: xDrive Tuned for Montreal Driving
BMW xDrive is rear-biased by default, sending more torque to the rear wheels for a sportier feel on dry pavement, then redistributing power forward the instant it detects slip. This setup keeps the driving feel sharp on the Décarie and surefooted when surfaces change -- like the gravel-strewn patches and fresh asphalt repairs that show up across the city in spring.
