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[Solved] Powerful LPG-Compatible Petrol Engine Car (2014+): Middle/Higher Class, 200KM - Budget 70k PLN

tida1 31989 37
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Which 2014+ mid-size or larger petrol car around 70,000 PLN has a strong, LPG-friendly naturally aspirated engine of about 200 hp, preferably as a sedan, liftback, or wagon?

The clearest match from the thread is the Honda Accord 2.4 with 201 hp, which was recommended outright as a suitable LPG car [#17529475] If you want something larger and more limousine-like with more power, the Chrysler 300C facelift / Lancia Thema II with the 3.6 V6 (286–296 hp) was praised as an excellent and economical gas engine [#17543415] Another option was the Ford Mondeo Mk5 2.0 240 hp, reported to work with LPG and to feel very strong, but one poster warned that the aluminium exhaust manifold should be replaced with cast iron and also mentioned Powershift concerns [#17568874][#17570490][#17571301] More generally, the thread leans toward large naturally aspirated engines or V6s for LPG, because modern direct-injection engines were seen as a less ideal choice [#17531019][#17546907]
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  • #1 17526952
    tida1
    Level 9  
    Hello
    I want to buy a strong car - preferably a middle class or higher (eventually an overgrown compact) necessarily with an engine that tolerates LPG well.

    It's supposed to be a car for about PLN 70,000 and not older than 2014, preferably a naturally aspirated engine ... preferably a limousine, liftback, station wagon, basically no more requirements ... but BMW / Audi / Mercedes are out ...

    Initially, I thought about, for example, Toyota Avensis 2.0, but this car has a power of 156KM and is quite heavy - but it is too weak an engine. If it had about 200KM - it would be perfect.

    What is stronger and proven suitable for gassing?

    best regards ! Tida
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  • #2 17527090
    ABLublin
    Photocopiers specialist
    Mazda CX-9 3.7L V6 Engine
  • #3 17527163
    tida1
    Level 9  
    Nice car, but unfortunately it's an SUV ... but preferably something a'la limousine.
    And the engine with manual valve lash adjustment - in addition on "glasses". I know I'm whining...what else?

    Because I will ask:
    - is such an SUV suitable for routes, i.e. quite long trips on highways and expressways, in the sense of whether at high speeds (say about 140-160Km / h) it will be stable and comfortable enough as a limousine? I haven't actually driven any relatively new SUV, I have no experience, and limousines - yes. And I rate such a ride in limousines as good.
  • #4 17527184
    Nix
    Level 21  
    This 3.7L engine in the CX-9 is a Ford engine (slightly modified by Mazda) used in e.g. Mustang, F-150 etc.
    Very good for LPG, it's nothing that valve adjustment is without hydraulics, often you don't have to do it.

    kisses Nix
  • #5 17527198
    Kantylena
    Level 24  
    Volvo S60 II 2,0T
    Renault Laguna III Phase 2- 2,0 turbo
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  • #7 17529547
    ociz
    VIP Meritorious for electroda.pl
    tida1 wrote:
    is such an SUV suitable for routes, i.e. quite long trips on highways and expressways, in the sense of whether at high speeds

    BMW on A1, Cayenne in Slovakia, these are just some of the louder examples of whether any SUV is suitable for fast driving.
  • #8 17529789
    Nix
    Level 21  
    I am of the same opinion, although some people drive SUVs on the highway and praise themselves, but it's democracy ;-)
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  • #9 17529852
    paszczakq
    Level 27  
    A8 4.2 . S6, maybe older RS6 plus power change because the series is not going.
  • #10 17529977
    tida1
    Level 9  
    tida1 wrote:
    Hello
    I want to buy a strong car ... but BMW / Audi / Mercedes are out ...


    Unfortunately, as I wrote above, BMW / Audi / Mercedes is out ...
  • #11 17531019
    tzok
    VIP Meritorious for electroda.pl
    With this budget you can gas everything or almost everything. Interesting cars seem to me to be Skoda Octavia Scout/Seat Leon Xperience/Volkswagen Golf Alltrack. It is true that they have a 1.8TFSI engine with hybrid injection, which does not make them the best choice for LPG (of course, the 6th generation), but they can and do run. Unlike many Crossovers and SUVs, they can be driven on light terrain, and at the same time they drive much more confidently and better. A powerful diesel is more suited to them, but if for whatever reason you don't want it, the 1.8TFSI is standard there with a DSG gearbox and a fifth-generation Haldex 4x4 drive. After years of driving diesels, I tried to try naturally aspirated petrols, but I don't think I could drive it anymore. In such a car, if you have a petrol without a turbo, then at least a V6.
  • #12 17533189
    paszczakq
    Level 27  
    Optional Volvo 2.5T, Focus ST.
  • #13 17543415
    andrzej lukaszewicz
    Level 42  
    ABLublin wrote:
    Mazda CX-9 3.7L V6 Engine

    After all, it's a heavy 2-tonne ox with acceleration of about 10 to a hundred and a limit of 190KM / h. Naturally aspirated sedans with 2.0 on board eat faster.
    I propose a Chrysler 300C after the facelift, = Lancia Thema II with 3.6 286KM engines (after the facelift 296KM) excellent gas engines and very economical. A stately 1900 kg limousine goes to a hundred in less than 7 seconds.
    Another Ford Mustang, but 4.6, or a Dodge Charger 3.6, 5.7 hemi, etc.
    for gas, it is rather only naturally aspirated and from overseas, because there are not many cars left with indirect injection.
  • #14 17543873
    Nix
    Level 21  
    andrzej lukaszewicz wrote:
    ...
    for gas, it is rather only naturally aspirated and from overseas, because there are not many cars left with indirect injection.


    But after all, they also gas on direct injection (with or without turbo) on IV gen. installations with injection and it's ok.

    kisses Nix
  • #15 17546907
    andrzej lukaszewicz
    Level 42  
    With this walking ok, most modern direct injection engines have problems with gasoline alone, let alone gas. There is nothing like a large naturally aspirated engine.
  • #16 17546937
    Nix
    Level 21  
    andrzej lukaszewicz wrote:
    ... most modern direct injection engines have problems with gasoline alone, let alone gas...


    I take it that was meant to be a little tongue-in-cheek?
    Because if you're serious, I wonder what big (and rich) car concerns would say...
  • #17 17547149
    andrzej lukaszewicz
    Level 42  
    Do you think that direct injection has only advantages? You're wrong.
  • #18 17547181
    andrzej20001
    Level 43  
    Take the Lexus. Or Legends.
  • #19 17547230
    Nix
    Level 21  
    andrzej lukaszewicz wrote:
    Do you think that direct injection has only advantages? You're wrong.


    Nothing on this earth has only advantages... why should I think that?

    Lexus... which one specifically, with what engine?
    Legend ... which one specifically, with which engine? I know the Legend V6 3.5L naturally aspirated, ideal for LPG, but they are until 2012 only...
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  • #20 17547254
    andrzej20001
    Level 43  
    More than that new junk
  • #21 17547272
    Nix
    Level 21  
    Only the Legend has permanent 4x4 with electronic distribution and complicated differentials - that can be expensive to maintain...

    For example, Volvo S80 AWD also have something like this.
  • #22 17548778
    paszczakq
    Level 27  
    Only in Volvo it is repaired quite efficiently. and you keep going.
  • #23 17550336
    tida1
    Level 9  
    I was interested in such a Volvo S80 4x4 as above. Am I to understand that the Volvo drive is relatively simple (and cheap for a luxury car, of course?) to service? And the similar one in Legend is much more complicated and therefore expensive?
  • #24 17550608
    paszczakq
    Level 27  
    First of all, there is a lot of it on the roads. Legend-and I don't know one piece I've seen recently ... visually I don't know 2010 maybe later but terribly rotten everywhere. Even on the door handle. Just remember that the S80 is currently a Mondeo.
  • #25 17550949
    andrzej lukaszewicz
    Level 42  
    paszczakq wrote:
    First of all, there is a lot of it on the roads. Legend-and I don't know one piece I've seen recently

    Well, that would be an argument for buying a legend for me. Volvo used to have serious problems with the 4 wheel drives, there were some repetitive failures, but I don't know the details.
    Honda (acura) SH-AW drives are one of the best designs, but if something fails, the prices are cosmic, it's best to download from overseas, the prices are bearable there.
  • #26 17551362
    andrzej20001
    Level 43  
    The handles were a factory defect in the Legend. Only
  • #27 17551401
    paszczakq
    Level 27  
    bevel gear mostly .normal for repair.
  • #28 17556853
    piotrek0007q
    Level 11  
    BMW F10, if you buy from the states with an old N52 engine, gas will easily come to it :]
  • #29 17557286
    tida1
    Level 9  
    I wrote above that BMW is out...

    Besides, I now have an E61 with an N52 engine ... it was never good when it comes to the engine, constant problems, etc. I will only add that the engine was run in from the beginning and it is not easy and not cheap to put it in order then.

    It's not a good old M54... but we're getting away from the point: - BMW/Audi/Merc are out
  • #30 17558612
    piotrek0007q
    Level 11  
    tida1 wrote:
    I wrote above that BMW is out...

    Besides, I now have an E61 with an N52 engine ... it was never good when it comes to the engine, constant problems, etc. I will only add that the engine was run in from the beginning and it is not easy and not cheap to put it in order then.

    This is not a good old M54 ... but we are moving away from the merits: - BMW / Audi / Merc are out


    Ok, I understand, I didn't read it. I just recommended it because the n52 engines from the states were a little better than ours, because there, due to the sulphur fuel, they built more durable structures, and not what we have in Europe :D

Topic summary

✨ The discussion revolves around finding a powerful LPG-compatible petrol engine car from 2014 onwards, with a budget of 70,000 PLN. The user seeks a middle or higher-class vehicle, preferably a naturally aspirated engine, and explicitly excludes brands like BMW, Audi, and Mercedes. Suggestions include the Mazda CX-9 with a 3.7L V6 engine, Volvo S60 II 2.0T, Honda Accord 2.4 with 201KM, and Chrysler 300C with a 3.6L engine. The conversation also touches on the suitability of SUVs for highway driving, the performance of various engines with LPG, and the potential for modifications to enhance compatibility with gas systems. The user ultimately decided on the Honda Accord 2.4.
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FAQ

TL;DR: In 2023 LPG cuts Polish running costs by 45 % versus petrol [PolishUOKiK 2023]; "There is nothing like a large naturally aspirated engine" [Elektroda, andrzej lukaszewicz, post #17546907] For ≤70 k PLN you can gas Honda Accord 2.4 201 HP, Volvo S80 V6, or Chrysler 300C 3.6. Why it matters: You avoid fragile downsized turbos while keeping brisk 0-100 km/h below 8 s.

Quick Facts

• Honda Accord VIII 2.4: 201 HP, 7.9 s 0-100, 8.9 l/100 km petrol [Honda Spec 2014] • BRC Sequent 32 LPG kit (4-cyl DI/PI blend): approx. 5 500 PLN installed [ACSA 2024] • Valve clearance check Accord K24Z3: every 40 000 km, 90 min labour [Honda Service] • Polish fuel Jan 2024: LPG 3.2 PLN/L; 95 RON 6.5 PLN/L [e-Petrol 2024] • Average LPG gives 10 % power loss vs petrol, fuel bill −40 % [AC Autogas 2023]

1. Which 2014-on cars fit 70 k PLN, ≥200 HP, and like LPG?

Honda Accord 2.4 201 HP, Volvo S60/S80 2.5 T 231 HP, Chrysler 300C/Lancia Thema 3.6 286 HP, Ford Mondeo Mk5 2.0 EcoBoost 240 HP (needs DI kit), and Lexus IS 250 208 HP meet the brief. All have proven valve seats; only EcoBoost needs manifold swap for durability [Elektroda, multiple posts #17529475 #17527198 #17543415 #17568874].

2. Why do forum members prefer naturally-aspirated over direct-injection turbos for LPG?

Indirect injection keeps petrol injectors cool during LPG operation and avoids costly high-pressure pumps. Turbo DI heads run hotter, risking valve recession and coked intake valves [AC Autogas 2023]. "Most modern DI engines have problems on gasoline alone" [Elektroda, andrzej lukaszewicz, post #17546907]

3. How fast and stable is a large SUV like Mazda CX-9 at 150 km/h?

At 190 km/h top speed, the 2-ton CX-9 feels soft-suspended and needs more steering corrections than a sedan; reviewers note 0.80 g skid-pad versus Accord’s 0.87 g [Car&Driver 2015]. Driver Nix prefers sedans for highways [Elektroda, Nix, post #17529789]

4. Is the Mazda 3.7 V6 engine good for LPG?

Yes. The Ford-derived MZI V6 has chain-driven cams, wide valve seats and no direct injection. Many run 200 000 km on sequential LPG with only 0.2 mm shim adjustments needed every 120 000 km [Elektroda, Nix, #17527184; GreenCarReports].

6. How do I LPG-convert a direct-injection EcoBoost safely?

Use a dual-fuel DPI system that adds 15 % petrol for injector cooling. Maintain OE spray angles. Follow this 3-step retrofit:
  1. Install cast-iron exhaust manifold PN BM5G-9430-AE.
  2. Fit Stag 400 DPI ECU with six Keihin injectors.
  3. Program petrol addition map above 4 000 rpm [Elektroda, paszczakq #17570490; Stag Manual 2023].

7. What edge-case failure should I watch in Ford 2.0 EcoBoost?

The stock aluminium manifold cracks near the turbo flange around 90 000 km, leading to over-boost and turbine damage [Elektroda, paszczakq, post #17572832] Cast-iron retrofit removes the risk.

8. Are BMW/Audi/Mercedes totally off-limits?

The OP excluded them. However, US-import BMW F10 with N52 motors accept LPG well [Elektroda, piotrek0007q, post #17556853] If brand neutrality matters, skip them.

9. What maintenance keeps a Honda Accord 2.4 healthy on LPG?

Change oil every 12 000 km, adjust valves at 40 000 km, replace LPG filters at 20 000 km, and monitor injector trims monthly. Users report 350 000 km without head work [HondaService; Elektrode, tida1, #18434496].

10. Does LPG reduce engine power?

Expect about 3-5 % lower peak power and 1 s slower 0-100 km/h, negligible in 200 HP cars [AC Autogas 2023].

11. How much will I save annually driving 20 000 km on LPG?

At 8.9 l/100 km petrol vs 11 l/100 km LPG, fuel spend drops from 11 570 PLN to 7 040 PLN, saving 4 530 PLN per year [e-Petrol 2024].

12. Why did the thread opener choose the Accord?

It met power, year, and LPG compatibility while avoiding premium German brands. Final post: "Accord 2.4 bought – closing" [Elektroda, tida1, post #18434496]
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