Buying a used luxury car like the BMW 4 Series is a dream for many. The sporty design, powerful engines, and modern features make it a top pick for drivers who want both performance and style. But not every model year is created equal. Some years of the BMW 4 Series come with more headaches than smiles, thanks to reliability issues, expensive repairs, and frustrating electrical problems. If you want to avoid disappointment (and emptying your wallet), knowing which years to avoid is essential.
This guide gives you everything you need to know about the BMW 4 Series years to avoid. We’ll look at the specific years that have caused trouble for owners, explain why they’re risky, and show you how to spot a better option. You’ll also find real-world examples, useful data, and practical advice to help you buy with confidence. If you’re considering a used 4 Series, read on—this could save you thousands of dollars and countless hours at the mechanic.
Understanding The Bmw 4 Series
The BMW 4 Series was introduced in 2014 as a sporty, more stylish counterpart to the popular 3 Series. It’s available as a coupe, convertible, and the four-door Gran Coupe. BMW designed the 4 Series to offer a more dynamic driving experience, with sharper handling and a lower, wider stance.
Over the years, the 4 Series has built a reputation for:
- Strong performance: Responsive engines, from turbocharged 4-cylinders to powerful inline 6s.
- Luxury features: High-quality interiors, advanced infotainment, and safety technology.
- Sporty looks: A lower roofline, wider body, and bold styling compared to the 3 Series.
But not every year delivered on the promise. Some model years struggled with reliability, especially as BMW packed in more technology and powerful engines. These issues can mean high ownership costs if you pick the wrong year.
Why Some Years Are Best Avoided
Before diving into the specific BMW 4 Series years to avoid, it’s important to understand why certain years have more problems. Luxury cars are packed with advanced features, but these can also bring complexity and risk.
Common reasons some years are riskier include:
- First-year redesigns: When BMW introduces a new generation, early models often have unexpected bugs. These get fixed in later years.
- Engine and electronic issues: Turbo engines and high-tech electronics sometimes have teething problems.
- Costly repairs: BMW parts and labor are expensive, so even “minor” issues can become a big financial burden.
- Widespread recalls: Some years see recalls for safety issues or defective components.
If you’re not careful, you could end up spending more on repairs than the car is worth.
Credit: www.bimmerfest.com
Bmw 4 Series Years To Avoid: The Main Offenders
Based on owner complaints, expert reviews, and reliability data, four BMW 4 Series model years stand out for the wrong reasons. These are the years most buyers regret—and for good reason.
1. 2014 Bmw 4 Series
The 2014 BMW 4 Series was the first model year for this line, replacing the 3 Series coupe and convertible. While it turned heads with new styling and a sporty feel, it also brought a wave of problems.
Why The 2014 Model Is Problematic
- First-year bugs: As with many first-year models, the 2014 4 Series suffered from “teething issues.” BMW was still ironing out problems with the new platform and electronics.
- Engine issues: The turbocharged engines, especially the N20 and N55, had problems with timing chain guides, oil leaks, and cooling system failures. These are not small fixes—timing chain repairs can cost over $2,000.
- Electrical glitches: Owners reported problems with the infotainment system, Bluetooth connectivity, and dashboard electronics. Sudden resets, unresponsive screens, and faulty sensors were common.
- Transmission problems: Some drivers noticed rough shifting or hesitation, especially in the automatic models. This often pointed to software issues or, in rare cases, mechanical faults.
Real-world Example
A 2014 428i owner shared online that their car experienced engine warning lights at just 40,000 miles. The dealer diagnosed a timing chain problem and quoted $2,500 for repairs—not covered under warranty.
Key Data
According to multiple owner surveys, the 2014 model had:
- Over 200 complaints logged on popular car forums.
- Above-average recall rates for airbag and electronics issues.
- High repair costs compared to later years.
Bottom Line
If you want peace of mind, avoid the 2014 BMW 4 Series. Unless you have proof that all major repairs and recalls have been handled, you’re better off with a later, more refined model.
2. 2015 Bmw 4 Series
The 2015 model saw minor updates, but many of the first-year issues continued. While BMW addressed some problems, the fixes were not always complete, and new glitches popped up.
Why The 2015 Model Is Risky
- Persistent engine troubles: Many 2015 models still had timing chain, oil leak, and coolant system issues. These are expensive to fix and can lead to bigger problems if ignored.
- Electrical and infotainment issues: Bluetooth, navigation, and iDrive system glitches remained frequent complaints. Some owners reported their screens going black while driving.
- Sunroof and convertible top malfunctions: The coupe’s sunroof and the convertible roof sometimes failed to close properly. Repairs could cost $1,000 or more.
- Fuel system faults: A number of owners experienced fuel pump failures, leading to engine stalling or rough running.
Repair Cost Comparison
Here’s a look at average repair costs for common 2015 BMW 4 Series problems:
| Problem | Average Repair Cost |
|---|---|
| Timing chain replacement | $2,200 – $3,000 |
| Infotainment system repair | $800 – $1,500 |
| Sunroof/Convertible top fix | $1,000 – $2,500 |
| Fuel pump replacement | $900 – $1,200 |
Non-obvious Insight
One thing many buyers miss: the 2015 4 Series can develop “hidden” software faults that don’t always trigger warning lights but cause strange behaviors (like windows not working or random warning sounds). Diagnosing these issues often takes several dealer visits, adding frustration and cost.
Bottom Line
The 2015 model might look like a safe bet, but the risk of expensive repairs and reliability headaches is still high. Unless you find a well-documented example with service history, it’s best to skip this year.
3. 2017 Bmw 4 Series
After a more stable 2016, the 2017 BMW 4 Series introduced new problems as BMW updated the lineup. This year saw a refresh with new engines and technology, but not all changes were positive.
Main Issues With The 2017 Model
- Engine updates gone wrong: BMW introduced the B48 and B58 engines, which were more efficient but had early reliability issues. Common complaints included oil leaks, coolant loss, and check engine lights.
- Steering and suspension complaints: Some owners reported clunky noises from the front suspension, uneven tire wear, and steering that felt loose or unresponsive.
- Infotainment bugs: The updated iDrive system sometimes froze, rebooted, or failed to pair with smartphones. This was especially common after software updates.
- Door and window seal problems: The coupe’s frameless windows sometimes failed to seal properly, leading to wind noise and water leaks.
Owner Story
A 2017 430i Gran Coupe driver shared that their car developed a coolant leak at just 30,000 miles. The repair required removing the intake manifold and cost nearly $1,800, which was only partly covered by BMW.
Reliability Data
According to J. D. Power and other sources, the 2017 model’s reliability score dropped compared to 2016. The frequency of engine and electronic issues was higher than average for the segment.
Real-world Comparison
How does the 2017 BMW 4 Series stack up against its key rivals?
| Model Year | BMW 4 Series | Audi A5 | Mercedes C-Class Coupe |
|---|---|---|---|
| 2017 | Below Average Reliability | Above Average Reliability | Average Reliability |
| Repair Frequency | High | Medium | Medium |
| Common Issues | Engine, Electronics | Electronics, Brakes | Transmission, Suspension |
Non-obvious Insight
BMW’s newer engines (like the B48/B58) are praised for performance, but early models are often “test beds” for new tech. Problems spotted in the 2017 year were reduced in 2018 and later, but buying a 2017 means you’re taking on that risk.
Bottom Line
The 2017 BMW 4 Series may have the features you want, but it’s a gamble. The risk of engine and electronic issues makes it one of the years best avoided.
4. 2019 Bmw 4 Series
You might expect newer to mean better, but the 2019 BMW 4 Series proves that’s not always true. While it improved on some past weaknesses, new complaints surfaced—especially around technology and driver-assist systems.
Why The 2019 Model Is A Risk
- Electronics overload: The 2019 4 Series packed in more technology than ever, but this led to glitches with driver aids, cameras, and infotainment. Owners reported false collision warnings, backup camera failures, and random system resets.
- Transmission hesitation: The automatic transmission sometimes hesitated or shifted harshly, especially at low speeds or when cold.
- Turbo lag and engine faults: Some drivers experienced turbo lag (slow acceleration response) and engine warning lights. In rare cases, turbo or fuel injector problems led to expensive repairs.
- Warranty confusion: Some 2019 models were sold with “leftover” 2018 parts or software, leading to confusion about warranty coverage and service bulletins.
Data Snapshot
2019 saw a spike in electronics-related complaints, with over 100 reports filed with the NHTSA and consumer sites. Most issues were not life-threatening but were frustrating and costly to fix out of warranty.
Example Of Owner Frustration
One 2019 440i owner wrote that their car’s forward collision system activated without warning, forcing a sudden stop on a busy highway. The dealership could not replicate the problem, and the issue returned twice before BMW issued a software update.
What Many Buyers Miss
The 2019 4 Series is packed with advanced driver-assist features. But more tech means more things that can go wrong. These systems often require specialized repairs, which can only be done at BMW dealers—not independent shops—driving up costs.
Bottom Line
If you want a trouble-free ownership experience, skip the 2019 BMW 4 Series. Newer does not always mean better, especially when it comes to complex electronics.
Bmw 4 Series: Problems To Watch For
Even outside the main years to avoid, the BMW 4 Series can have trouble spots that show up across multiple years. If you’re shopping for a used 4 Series, here’s what to look out for:
- Timing chain issues: Especially on N20/N26 engines (2014-2016), timing chain and guide failures are costly.
- Oil leaks: Valve cover, oil filter housing, and oil pan gaskets are known weak points.
- Water pump failures: Electric water pumps can fail suddenly, leading to overheating.
- Electronic glitches: IDrive, sensors, and cameras are common sources of frustration.
- Convertible top malfunctions: Complex mechanics and electronics mean the top can get stuck or leak.
It’s wise to get a pre-purchase inspection from a BMW specialist. They can check for these problems and spot warning signs that a casual buyer might miss.
Years Of The Bmw 4 Series Worth Considering
Not every 4 Series model year is risky. Some years have earned a reputation for solid reliability and lower ownership costs. If you want the driving excitement of a BMW without as much risk, consider these years instead:
- 2016: A “sweet spot” year with most early problems fixed, and before the major tech changes of 2017.
- 2018: Improved engines and fewer electronic bugs compared to 2017.
- 2020 and newer: BMW ironed out many issues and offered updated tech with better reliability.
Always check the service history, look for cars with completed recalls, and buy from a reputable seller.
Key Factors When Buying A Used Bmw 4 Series
Choosing the right used BMW 4 Series is about more than just picking the right year. Here are crucial factors to consider:
Service History
A complete, detailed service history is gold. It shows the car was cared for and that big-ticket maintenance (like timing chain or water pump) is done.
Certified Pre-owned (cpo) Vs. Private Sale
Buying Certified Pre-Owned (CPO) means the car was inspected and comes with some warranty. Private sales are cheaper but riskier.
Inspection By A Bmw Specialist
Don’t trust a regular mechanic for a BMW. A BMW-trained specialist knows the common issues and can spot expensive problems before you buy.
Common Buyer Mistakes
- Skipping the pre-purchase inspection: This can lead to buying a car with hidden problems.
- Ignoring warning lights or odd sounds: These often signal bigger issues.
- Choosing based on looks alone: A beautiful coupe with engine trouble isn’t a good deal.
Credit: www.autocar.co.uk
How Bmw 4 Series Years Compare
Let’s see how the main years to avoid compare across key reliability metrics:
| Year | Major Engine Issues | Electronics Problems | Repair Costs | Overall Reliability |
|---|---|---|---|---|
| 2014 | High | High | Expensive | Poor |
| 2015 | High | Medium-High | Expensive | Below Average |
| 2017 | Medium-High | High | Expensive | Below Average |
| 2019 | Medium | Very High | Expensive | Poor |
This comparison makes clear that the years listed above are riskier and costlier to own.
Smart Buying Tips For The Bmw 4 Series
Getting a great deal on a used BMW 4 Series is possible if you follow some smart steps:
- Research recalls and service bulletins: Check if the car you’re interested in has open recalls or common faults. BMW’s official website and the NHTSA database are good sources.
- Ask for maintenance records: Walk away from any car without clear records.
- Test drive with care: Listen for odd noises, check for warning lights, and test all electronics.
- Check electronics and features: Make sure the infotainment, backup camera, Bluetooth, and climate control all work smoothly.
- Negotiate price based on condition: If you find minor issues, use them to negotiate a better price. Don’t accept “it’s a BMW, they all do that” as an excuse for real problems.
Is The Bmw 4 Series Expensive To Own?
BMWs are known for high repair and maintenance costs, and the 4 Series is no exception. Here’s what to expect:
- Annual maintenance: Plan for $1,200–$1,800 per year for regular service and minor repairs.
- Big repairs: Engine, electronics, or convertible top repairs can easily cost $2,000–$4,000.
- Insurance: Sporty models often cost more to insure than a standard sedan.
A well-maintained 4 Series can be reliable, but skipping maintenance is a recipe for disaster.
When A Risky Year Is Still A Good Deal
Are all 2014, 2015, 2017, or 2019 BMW 4 Series cars bad buys? Not always. If you find one with:
- Complete service records
- All recalls and major repairs completed
- A lower price compared to similar cars
…it might still be worth considering, especially if you’re comfortable with higher running costs.
But for most buyers, it’s safer to choose a more reliable year. Remember, a cheaper purchase price doesn’t make up for expensive repairs later.
Non-obvious Insights For Bmw 4 Series Buyers
Most buyers focus on engine and electronics reliability, but two other factors matter:
- Resale value: Unreliable model years lose value faster. If you buy a “problem” year, expect it to be harder to sell later.
- Dealer network: Not all independent mechanics can handle complex BMW electronics. Make sure you have a qualified BMW dealer or specialist nearby before buying.
External Resource
For more data on BMW 4 Series recalls and owner experiences, see the official BMW 4 Series Wikipedia page.
Credit: www.youtube.com
Frequently Asked Questions
What Is The Most Reliable Bmw 4 Series Year?
The 2016 BMW 4 Series is often considered the most reliable. By this year, BMW had fixed many first-generation issues, and it came before the tech-heavy updates that brought new problems.
Are Bmw 4 Series Cars Expensive To Maintain?
Yes, maintenance and repair costs are higher than for mainstream cars. Annual maintenance can run $1,200–$1,800, and major repairs cost more. Always budget for above-average ownership costs.
How Long Do Bmw 4 Series Cars Last?
With proper care, a BMW 4 Series can last over 150,000 miles. Regular maintenance and timely repairs are key. Neglected models may have serious problems before 100,000 miles.
Should I Buy A Used Bmw 4 Series With High Mileage?
It depends on the service history and condition. A high-mileage 4 Series with detailed records can be a good buy, but avoid cars with gaps in maintenance or obvious issues.
Is The Bmw 4 Series A Good Daily Driver?
Yes, if you choose a reliable year and keep up with maintenance. The 4 Series is comfortable, stylish, and fun to drive. Just be prepared for higher repair costs compared to non-luxury cars.
Choosing the right BMW 4 Series can give you years of driving pleasure. But picking the wrong year may lead to regret. Use this guide to make a smart, confident choice—and enjoy the ride.
