Every engine and model compared side-by-side. From Ingenium diesel versus petrol, to AJ126 vs AJ133 V8, and XF vs XJ - our unbiased comparison pages give you reliability ratings, cost data, and a clear winner.
This hub lists every Jaguar comparison page on our site. Whether you're choosing between an XE and XF, deciding between diesel and petrol Ingenium, or weighing up the AJ126 V6 against the AJ133 V8, we've done the research. Each comparison includes reliability ratings, typical replacement costs, and a clear verdict.
Use this index to find the comparison you need. All data is drawn from our proprietary enquiry database and verified specialist insights.
Direct head-to-head comparisons between Jaguar engine families. Each page covers reliability, cost of ownership, and which one we'd choose.
For more detail on each engine, visit our Engine Knowledge Centre or check the engine failure data behind these comparisons.
Which Jaguar model suits you best? Compare model ranges, engine options, and ownership costs.
Each model comparison includes real enquiry data and repair/replace guidance. For a detailed breakdown of each model's engine options, visit our fitment guide.
Sometimes you need a final verdict. These pages help you decide whether to buy, keep, or scrap a Jaguar model based on real data.
For a full decision framework, see our repair vs replace vs scrap guide and the repair vs replace calculator.
The answer depends on the model and year. Generally, the later Ingenium petrol (204PT) and the post-2013 AJ133 V8 are considered more reliable than earlier Ingenium diesels or pre-2013 AJ133. See our failure rate by engine for data.
The XE and XF with four-cylinder Ingenium engines tend to have lower running costs than V6 or V8 models. However, petrol Ingenium is often cheaper to repair than diesel due to fewer DPF and EGR issues. See our cheapest Jaguars to own guide.
Diesel offers better fuel economy but higher repair costs (DPF, EGR, AdBlue). Petrol is simpler but less economical. Our diesel vs petrol running costs page breaks it down with real data.
Start by deciding whether you need an engine comparison or a model comparison. Then select the specific page from the lists above. Each page gives a clear verdict and links to supporting data from our data centre.
15+ vetted specialists - our comparison data is informed by real workshop experience.
9,000+ enquiries - every comparison uses real UK enquiry data, not guesswork.
Independent editorial - we are not a garage. We research and route to specialists.
All comparisons updated - we refresh data annually; see our methodology.
Start with our comparison pages, then speak to a vetted specialist who can give you a real quote.
ENGINE COMPATIBILITY CHECKER OUR VETTED SPECIALISTS