Audi S3 vs BMW 340i
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2018 BMW 340i
Overview
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| Selected trim | S3 Sedan | 340i |
| Body style | Sedan | Sedan |
| Drivetrain | all wheel drive | rear wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (recommended) |
| Transmission | 7-speed automated manual | 8-speed shiftable automatic |
| Engine type | gas | gas |
| Model year | 2026 | 2018 |
Pricing & market
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| MSRP | $52,000 | $48,950 (best) |
| Lowest listing price | $36,150 (best) | — |
| Median listing price | $54,367 (best) | — |
| Highest listing price | $59,820 (best) | — |
| For sale now | 4 (best) | 0 |
Fuel economy & range
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| Combined MPG | 26 MPG (best) | 25 MPG |
| City MPG | 23 MPG (best) | 21 MPG |
| Highway MPG | 31 MPG | 32 MPG (best) |
| Fuel tank | 14.5 gal | 15.8 gal (best) |
Performance
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| Horsepower | 328 hp (best) | 320 hp |
| Torque | 295 lb-ft | 330 lb-ft (best) |
| Engine size | 2 L | 3 L (best) |
| Cylinders | I4 | I6 |
Size & capability
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| Seating | 5 seats | 5 seats |
| Doors | 4 | 4 |
| Cargo volume | 8.3 cu ft | 13 cu ft (best) |
| Payload | 860 lbs (best) | — |
| Curb weight | 3,549 lbs (best) | 3,695 lbs |
| Ground clearance | — | 5.5 in (best) |
| Wheelbase | 103.6 in | 110.6 in (best) |
| Length | 177.4 in | 182.8 in (best) |
| Width | 71.5 in (best) | 71.3 in |
| Height | 55.7 in | 56.3 in (best) |
Safety & recalls
| Spec | Audi S3S3 Sedan | BMW 340i340i |
|---|---|---|
| NHTSA overall | Not Rated | — |
| Frontal crash (driver) | Not Rated | — |
| Frontal crash (passenger) | Not Rated | — |
| Side crash (driver) | Not Rated | — |
| Side crash (passenger) | Not Rated | — |
| Side pole | Not Rated | — |
| Rollover | Not Rated | — |
| Open recalls (YMM scope) | None reported (best) | 1 |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | Audi S3 | BMW 340i |
|---|---|---|
| 1 | S3 Sedan $52,000 MSRP(Currently comparing) | 340i $48,950 MSRP(Currently comparing) |
Live inventory
Audi S34 for sale
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2023 Audi S3
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New2026 Audi S3
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Audi S3 vs BMW 340i FAQ
- Which is better: 2026 Audi S3 or 2018 BMW 340i?
- It depends on priorities. OpenDealer compares 2026 Audi S3 vs 2018 BMW 340i on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 Audi S3 or 2018 BMW 340i?
- Based on starting MSRP, the 2018 BMW 340i starts lower at $48,950. Live Audi S3 listings start at $36,150.
- Which has better startingMsrp: 2026 Audi S3 or 2018 BMW 340i?
- The 2018 BMW 340i leads on startingMsrp in this comparison (48,950).
- Which has better combinedMpg: 2026 Audi S3 or 2018 BMW 340i?
- The 2026 Audi S3 leads on combinedMpg in this comparison (26).
- Which has better horsepower: 2026 Audi S3 or 2018 BMW 340i?
- The 2026 Audi S3 leads on horsepower in this comparison (328).
- How do the NHTSA safety ratings compare for 2026 Audi S3 vs 2018 BMW 340i?
- NHTSA overall crash-test ratings in this comparison: Audi S3 (Not Rated/5 NHTSA overall).