If you’re eyeing a used BMW 3 Series from the late 2000s to early 2010s, two of the most performance-focused trims will likely stand out: the 335d and 335i. While they share the same basic E90 chassis and luxury DNA, their engines and driving experiences couldn’t be more different. One is a torque-rich diesel bruiser; the other is a high-revving turbocharged gas car loved by enthusiasts. This comparison breaks down the major differences between the BMW 335d and 335i—from performance and fuel economy to reliability and maintenance—so you can decide which one best suits your needs.
Quick Specs Comparison: BMW 335d vs 335i
| Category | BMW 335d | BMW 335i |
|---|---|---|
| Engine | 3.0L Inline-6 Twin-Turbo Diesel (M57) | 3.0L Inline-6 Turbocharged Gasoline (N54/N55) |
| Horsepower | 265 hp | 300 hp |
| Torque | 425 lb-ft | 300 lb-ft |
| 0–60 mph | 5.7 seconds | 5.0–5.2 seconds |
| Transmission | 6-speed automatic only | 6-speed manual or 6/8-speed automatic |
| Fuel Economy (Combined) | 27–36 mpg | 20–28 mpg |
| Drive Type | RWD only (US models) | RWD or AWD (xDrive) |
| Tuning Potential | Moderate (ECU, EGR, DPF delete) | High (400+ hp with bolt-ons) |
Performance Comparison
The 335i wins in top-end performance, but the 335d dominates with torque and mid-range pull. The 335d’s diesel engine is all about effortless highway speed, with 425 lb-ft of torque arriving just off idle. It’s a monster in rolling acceleration. Meanwhile, the 335i is more rev-happy and responsive, especially with the N54 engine that features twin turbos and huge tuning potential.
If you enjoy spirited driving and high-RPM pulls, the 335i is your car. But if you want powerful acceleration with minimal effort—especially for commuting or highway cruising—the 335d will surprise you with its diesel punch.
Fuel Efficiency
One of the 335d’s greatest strengths is its fuel economy. You can expect 27–36 mpg on average, even with aggressive driving. The 335i offers decent efficiency for a turbocharged gas engine, but realistically lands in the 20–28 mpg range.
Verdict: For long-distance driving, commuting, and road trips, the 335d is the clear winner on efficiency.
Driving Experience and Feel
- BMW 335d: Effortless torque, heavier front end due to diesel engine, ultra-smooth highway ride, automatic-only transmission
- BMW 335i: Sharper throttle response, better weight distribution, available manual transmission, more nimble in corners
The 335i feels more like a classic BMW sport sedan—nimble, eager to rev, and engaging to drive. The 335d, while quick, feels more like a highway cruiser or autobahn bruiser, trading raw engagement for refined thrust.
Reliability and Maintenance
Common 335i Issues (N54/N55 Engines)
- High-Pressure Fuel Pump (HPFP) failures
- Turbo wastegate rattle (especially N54)
- Carbon buildup on intake valves (direct injection)
- Water pump and thermostat failure
Common 335d Issues (M57 Diesel Engine)
- Diesel Particulate Filter (DPF) clogging
- SCR system and DEF injector problems
- Glow plug/module failures
- EGR valve and cooler clogging
Important: The 335d’s emissions system can be expensive to repair. Many owners opt for emissions deletes (DPF/EGR) for better reliability and performance, but this makes the car no longer street-legal in emissions-regulated areas.
Tuning and Modification Potential
- 335i (N54): Highly tunable with bolt-ons. JB4, downpipes, upgraded turbos can push 400–500+ hp easily.
- 335d: Can be tuned for better throttle response and power, but gains are more limited without emissions deletes.
Verdict: The 335i is a tuner’s dream. If you love modifying cars, it has way more aftermarket support than the 335d.
Which One Should You Buy?
Choose the 335d if:
- You do a lot of highway miles or long commutes
- You want powerful midrange torque with great fuel efficiency
- You don’t mind the lack of a manual transmission
- You’re okay with the complexity of diesel emissions systems
Choose the 335i if:
- You prefer sporty driving and high-RPM performance
- You want a manual transmission
- You plan to tune and modify your car
- You want classic BMW handling and engagement
Resale and Market Trends
The 335d is more rare and tends to have lower resale values due to limited demand and fear of diesel emissions repairs. However, enthusiasts appreciate the torque and economy combo. The 335i has a broader market appeal and higher mod community demand, especially N54-powered examples.
Final Thoughts
The 335d and 335i are both great cars—but they serve different purposes. The 335d is a diesel-powered torque monster, ideal for highway warriors and fuel-conscious drivers who still want strong acceleration. The 335i is better for those who love spirited driving, tuning, and traditional BMW sport sedan dynamics. Choose based on your lifestyle: daily commuter or backroad enthusiast.
Tip: Before buying either model, get a pre-purchase inspection and confirm the service history. For the 335d, ensure DPF and DEF components are working. For the 335i, verify the condition of the HPFP and turbos.