BMW E46 vs Mercedes W203 vs Audi B6 Compared
The Golden Era of Compact Executives
The early 2000s produced three outstanding compact executive sedans that defined a generation. The BMW E46 3 Series, the Mercedes W203 C-Class, and the Audi A4 B6 each brought a distinct philosophy to the segment. Two decades later, all three are affordable used cars — but the market tells very different stories for each.
We analysed our latest data from February 27, 2026 to help you decide which one deserves a spot in your garage.
Head-to-Head Price Comparison
Current Market Overview
| Metric | BMW E46 | Mercedes W203 | Audi A4 B6 |
|---|---|---|---|
| Average price | €15,420 | €4,411 | €3,148 |
| Minimum price | €1,100 | €1,100 | €1,100 |
| Maximum price | €520,000 | €11,850 | €9,850 |
| Average mileage | 193,061 km | 174,441 km | 223,271 km |
| Listings | 60 | 48 | 31 |
| Model years | 1997—2006 | 2000—2007 | 2000—2006 |
Understanding the Price Gap
The BMW E46’s striking average of €15,420 is heavily influenced by rare collector specimens, including the iconic E46 M3 which commands premium prices. Standard E46 saloons and tourings trade for considerably less, often in the €2,000 to €8,000 range.
The Mercedes W203 sits in the middle at €4,411 on average, while the Audi A4 B6 is the budget champion at just €3,148. All three models share an identical entry price of €1,100, proving that bargains exist across the board.
Strengths and Weaknesses
BMW E46 — The Driver’s Choice
The E46 is widely regarded as the finest 3 Series ever made. Its rear-wheel-drive chassis delivers engaging handling that neither rival can match. The inline-six engines (325i, 330i) are smooth, powerful, and have earned a devoted following.
Pros: Best driving dynamics in its class, massive enthusiast community, excellent parts availability, wide model range including saloon, touring, coupe, and convertible.
Cons: Higher average pricing, known issues with subframe mounting points and cooling system components. The 60 current listings provide solid selection, however.
Mercedes W203 — The Comfort King
The W203 C-Class delivers the plush, refined experience Mercedes is known for. It absorbs road imperfections better than its competitors and makes long journeys effortless. Build quality is typical Mercedes of the era — solid and dependable.
Pros: Moderate average price of €4,411, lowest average mileage of the trio (174,441 km), comfortable ride, proven mechanicals.
Cons: Some examples suffer from rust around the wheel arches, and older automatic gearboxes can develop issues. With 48 listings, availability is decent.
Audi A4 B6 — The Value Play
The Audi A4 B6 is the value proposition of this comparison. At an average of just €3,148, you get a well-built car with optional quattro all-wheel drive, a refined interior, and understated styling.
Pros: Lowest average price, optional quattro AWD, timeless design, excellent long-distance cruiser.
Cons: Highest average mileage (223,271 km), smallest selection with just 31 listings, and certain engines are known for oil consumption.
Which One Should You Buy?
For driving enthusiasts: The BMW E46 is the obvious pick. Nothing in this generation matches its steering feel and chassis balance, particularly with a six-cylinder and manual gearbox.
For comfort seekers: The Mercedes W203 wins with its lowest mileage and trademark long-distance comfort. At an average of €4,411, it represents fair value.
For budget buyers: The Audi A4 B6 delivers the most car per euro spent at just €3,148 on average, especially compelling with the quattro drivetrain.
For collectors: Keep an eye on the E46 M3. The E46’s maximum price of €520,000 shows where well-preserved sporting variants are headed.
The Verdict
All three compact executives start at around €1,100, making them some of the most accessible premium used cars on the market today. The BMW E46 offers the most engaging drive, the Mercedes W203 the most relaxed ownership, and the Audi A4 B6 the strongest value argument.
Your ideal choice depends on your priorities. Explore each model’s dedicated page for the full picture, and remember: regardless of badge, a thorough inspection and documented service history matter more than any brand loyalty.