BMW 7 Series Buying Guide: Cost, Reliability & Best Years

You’ve probably noticed a BMW 7 Series parked in a Dublin suburb and wondered why such a luxury saloon can sometimes be had for less than a new Ford Focus. This guide breaks down the real cost of buying and running a 7 Series in Ireland, which years to avoid, and how the new electric i7 compares to the petrol 740i.

First generation launched: 1977 ·
Current generation (G70) introduced: 2022 ·
Number of generations: 7 ·
Average asking price in Ireland (used, 5+ years): €25,000 – €60,000 ·
Common problem area (air suspension): reported on forums since 2005

The table below summarizes key specifications and data points for the BMW 7 Series.

Why is the BMW 7 Series so cheap?

Luxury sedans lose value fast, but the 7 Series stands out even among peers. According to CarGurus (used‑car analysis platform), a 7‑Series can shed 50–60% of its original price within five years. That turns a €110,000 car into a €45,000 used buy – but the bargain comes with strings attached.

Depreciation pattern

• First five years: steepest drop, especially on V8 models
• After seven years: values plateau around €25,000–€35,000 for well‑maintained examples
• Electric i7 is too new to judge resale, but early data from UK auctions suggests similar trajectory

Maintenance cost reputation

High repair bills scare off many buyers, lowering demand further. A single air‑suspension strut replacement on an older 7 Series can cost between €1,500 and €3,000 per corner, as reported on BimmerPost (owner forum). That reputation keeps prices low for the brave.

Market oversupply of older models

Many 7 Series enter the used market as ex‑fleet or ex‑lease cars. The sheer volume of 2005–2015 models on Irish sites like DoneDeal pushes prices down, sometimes as low as €8,000 for an E65 with high mileage.

The implication: You can get a luxury car for a fraction of its original cost, but the savings come with higher maintenance risks.

Which year BMW 7 Series should you avoid?

Not all 7 Series generations age the same. The worst offenders are the ones that earned the model its price reputation in the first place.

2002-2008 E65/E66 common faults

• Transmission failures (6-speed ZF unit) – no official recall, many owner reports
• Electronic glitches: iDrive screen failure, battery drain
• Air suspension compressor failures

2015-2019 G11/G12 reliability issues

• Early G11 models (2015-2016) had air suspension strut leaks
• N63 V8 engines (750i) suffer from valve stem seal and timing chain wear
• Less common on 740i with B58 inline‑six

Recommended model years

The sweet spot is the 2016-2019 G11 740i. It uses the B58 engine – Car and Driver (automotive publication) rates it as one of BMW’s most reliable powertrains. Avoid any pre‑2010 car unless you have a dedicated mechanic budget.

“I’ve owned six 7 Series. The worst was an E65 745i – electronic gremlins from day one. The best is my 2017 740i with the B58 engine; it’s been bulletproof.”

– Owner on BimmerPost (2019)

What are common BMW 7 problems?

Even the good years have weak points. Here’s what to watch for, generation by generation.

Air suspension

Air springs and compressors fail across all generations. On the G11, a strut replacement runs €1,500–€2,500 at an Irish independent specialist. The BMW Ireland (official manufacturer) recommends inspecting the system every 40,000 km.

Electrical faults

Battery drain and iDrive glitches are common on older models, especially the E65. The issue is often a failing emergency‑call module or a parasitic draw from the rear‑seat entertainment system.

Oil leaks N63/N74 engines

The N63 V8 is notorious for valve stem seal oil leaks. Car Keys (UK buyer’s guide) notes that timing chain replacement is a €3,000‒€5,000 job on these engines. Avoid the N63 unless you have a full service history.

Transmission issues

The ZF 8-speed automatic used from 2009 onward is generally robust, but earlier ZF 6-speed units (E65) suffer from mechatronic unit failures. No official recall exists, but independent forums document the problem extensively.

The pattern: Most problems are known and preventable with proactive inspection, but the cost of repair can quickly outstrip the savings from the low purchase price.

Is the BMW 7 Series a good buy?

For the right buyer, it is an incredible value – if you understand the trade‑offs.

What this means: The 7 Series rewards careful ownership but punishes neglect.

Are BMW i7 and 740i the same?

They share the same G70 chassis and nearly identical interiors, but the powertrain difference is fundamental. Here’s how they compare for Irish buyers.

Four models, one platform, two philosophies – the table below lays out the differences that matter most on Irish roads.

The i7 saves on fuel and tax but costs more upfront. The 740i is cheaper to buy but pricier to run. For Irish commuters doing 20,000 km/year, the i7’s running cost advantage could offset its higher purchase price over five years – but only if you have home charging.

The catch: The i7’s upfront premium is significant; the break‑even point depends heavily on mileage and charging access.

BMW 7 Series Buying Guide: Cost, Reliability, and the Best Years to Buy

Now let’s put it all together for the Irish market. Whether you’re browsing DoneDeal or a main dealer, here’s what to look for.

Entry costs in Ireland

• New 740i: from ~€110,000 (BMW Ireland)
• Used 2016 740i (G11): €30,000 – €45,000 on DoneDeal (observed listings)
• Used 2005-2008 E65: €8,000 – €15,000 – high risk
• Used 2020 745e (PHEV): €55,000 – €70,000 – lower tax

Running costs

• Insurance: typical €1,200‒€1,800 per year for a 2017 740i
• Annual service: €600‒€1,200 for routine, €2,000+ for major (brakes, suspension)
• Road tax: €750‒€1,800 depending on CO₂ (NCT.ie rate bands)
• Fuel: ~9 L/100km for B58, premium fuel required

Reliability by generation

• E23 (1977-1986): classic, but parts scarce
• E32/E38 (1986-2001): better electronics, still old
• E65/E66 (2002-2008): avoid – transmission, electronics, suspension
• F01/F02 (2009-2015): improved but N63 V8 issues
• G11/G12 (2016-2019): recommended – B58 engine best choice
• G70 (2022+): too new for long‑term data

Top picks: 2016-2019 740i, 2020+ 745e

Car Keys (UK buyer’s guide) points to the 2017-2019 740i as the best value, with full service history a must. The 2020 745e plug‑in hybrid qualifies for lower Irish road tax (€180 per year) and offers a quiet electric commute up to 50 km. For a similar format buying guide, see our Garmin Forerunner: Which Model Should You Buy.

The pattern: Sticking with the B58 engine and avoiding early‑model years is the cheapest path to ownership.

Timeline of the BMW 7 Series

• 1977 – First 7 Series (E23) introduced (CarGurus (car research site))
• 2002 – E65 generation launched; known for high repair costs (Car Keys (UK buyer’s guide))
• 2009 – F01 generation; improved reliability but N63 issues persist (Car and Driver (automotive publication))
• 2016 – G11 generation; considered most reliable modern 7 Series (Car Keys (UK buyer’s guide))
• 2022 – G70 generation with i7 all-electric variant (BMW Ireland (official manufacturer))

The implication: The 7 Series has evolved significantly; the most reliable era is the G11 generation with the B58 engine.

Clarity: confirmed facts vs. what remains uncertain

Confirmed facts

• Air suspension failures are documented across multiple generations (BimmerPost (owner forum))
• N63 V8 engine known for timing chain and valve seal problems (Car and Driver (automotive publication))
• 2016-2019 740i is widely considered the most reliable modern generation (CarGurus (car research site))

What remains unclear

• Long-term reliability of G70 generation – too new, limited owner data
• Exact number of E65 transmission failures – no official recall data
• Whether i7 holds value better than 740i – not enough resale history

What this means: Buyers must weigh documented weaknesses against unknown future reliability.

Quotes from owners and experts

“The BMW i7 offers a range of up to 590 km WLTP, making it a realistic option for cross‑Ireland journeys on a single charge.”

– BMW Ireland (official press release, 2022)

“Air suspension repairs are the number one cost complaint across all 7 Series generations. Budget €1,500 per corner.”

– BimmerPost member (2019 survey)

“The 2017 7 Series received a J.D. Power reliability score of 79/100 – above average for the segment.”

– J.D. Power (2018 U.S. Vehicle Dependability Study)

If you’re also researching luxury purchases, our Gucci Watch Men: G-Timeless, 25H & Dive Buying Guide follows a similar value‑focused approach.

Summary: Should you buy a BMW 7 Series in Ireland today?

The 7 Series offers an unmatched luxury‑to‑price ratio on the used market – if you’re prepared for the upkeep. For Irish buyers on a €30,000‒€45,000 budget, a 2017-2019 740i with full service history is the most sensible choice. The i7 makes sense for high‑mileage electric drivers willing to pay a premium upfront. Avoid the E65 and early G11 unless you have deep pockets for repairs. For the budget‑conscious luxury enthusiast in Ireland, the choice is clear: buy a 2016-2019 740i, set aside €2,000 annually for maintenance, or consider a 2020 745e for lower road tax.

For the latest details on the flagship model, check out our dedicated guide to BMW 7 Series 2025 pricing and specs in Norway.

Frequently asked questions